10 Best Milk Thistle Supplements

Milk thistle supplements: what to look for

The most useful starting point is a complete, readable label. Look for the botanical identity, plant part, extract amount, serving size, daily directions, every inactive ingredient, lot number, expiration date, responsible company, and a usable safety contact. A simple single-herb formula is easier to assess than a blend containing 20 or more active ingredients. Proprietary blends are a recurring problem because they can hide the individual amounts of ingredients that may affect medicines, digestion, bile flow, or allergy risk.

Headline strength figures can mislead. A 4:1, 30:1, or 50:1 ratio describes an extract-to-raw-herb equivalence, not the amount of silymarin. “1,000 mg” may refer to raw-herb equivalent or extract marketing rather than measured active compounds. Even an “80% silymarin” claim is not the same as a finished-lot assay. The strongest evidence would identify authentic *Silybum marianum* and report a specifically measured total-silymarin result for the product sold, preferably using a chromatographic method such as HPLC. A manufacturer-stated number, an ingredient-level test, or a facility certificate does not provide the same assurance.

Testing should cover the finished product, not only raw materials or the manufacturing site. Useful evidence includes recent lot-specific results for toxic elements, pesticides, microbes, molds, mycotoxins, residual solvents where relevant, and adulterants. Current independent verification of the exact product is stronger still. Examples in the supplied records include an official NSF/ANSI 173 listing, Clean Label Project certification based on retail sampling and ISO 17025-accredited laboratory testing, or current public retail-sample testing. NSF GMP certification for a facility supports manufacturing controls but does not certify the contents of a particular bottle.

Marketing should stay within qualified support language and include the FDA dietary-supplement disclaimer. A high-quality label also gives practical warnings for medicines, ragweed-family allergies, pregnancy and breastfeeding, surgery, medical conditions, and adverse reactions. Across the supplied products, buyers should not self-treat diagnosed liver or gallbladder conditions, jaundice, persistent or severe abdominal symptoms, or abnormal liver tests. Pregnancy and breastfeeding require particular caution because safety information is limited. People taking medicines, preparing for surgery, under 18, or allergic to ragweed, daisies, chrysanthemums, marigolds, artichoke, celery, or related plants should obtain individualized clinical advice before use. Multi-ingredient formulas deserve additional review because their combined risks are harder to predict.

Integrity

Full reviews

#1 - Best Overall

aSquared Nutrition Milk Thistle Supplement 1000mg

Buyer Score 98/100Integrity Score 64/100aSquared Nutrition

Overview

This is a 200-capsule vegan milk thistle product intended for adult liver support. The label held in the NIH Dietary Supplement Label Database lists one vegetable capsule as a serving, with 250 mg milk thistle extract, plus vegetable cellulose and rice flour. It directs adults to take one capsule with a meal, or up to two daily if needed. The label identifies the extract as a 4:1 Silybum marianum seed extract, which is described as equivalent to 1,000 mg of herb. However, the brand's current product page calls it 1,000 mg of extract per capsule, a materially different description from the 250 mg extract on the label. Neither source provides a measured total-silymarin percentage or finished-lot assay. Human evidence does not establish milk thistle as a liver detoxification or liver-disease treatment.

What works

• The archived product label gives a complete, short ingredient list and clear one or two capsule directions.
• The label includes practical cautions for pregnancy or nursing, medication use, medical procedures, children, and ragweed or daisy-family allergy.
• A named responsible firm, mailing address, phone number, email contact, storage directions, and safety-seal instruction appear on the label.
• The manufacturer states that the product is vegan, made in the United States, and tested in an ISO 17025-certified laboratory, though no finished-lot report was published for verification.

What does not

• The current brand page says 1,000 mg of extract per capsule, while the recorded label lists 250 mg extract and describes 1,000 mg only as herb equivalence.
• No total-silymarin assay is disclosed, so the amount of the principal milk thistle constituents cannot be calculated from the label.
• No public lot-specific certificate of analysis was found for identity, potency, heavy metals, pesticides, microbes, mycotoxins, or adulterants.
• Marketing uses detoxification, toxin-removal, heart-health, cholesterol-balance, and anti-aging language that goes beyond the limited and inconclusive human evidence for milk thistle.
• The manufacturer claims third-party testing and GMP compliance, but it does not identify a certifier or publish an independently verifiable certification or current finished-product results.

Who is it for

This product fits an adult who specifically wants a single-ingredient milk thistle extract in a long-duration capsule bottle, and who values a label with unusually explicit allergy, medication, pregnancy, and procedure cautions. It may suit someone using milk thistle as a personal dietary supplement rather than as treatment for a diagnosed condition. The one-capsule serving and option for a second capsule with meals make the directions straightforward. The buyer should accept that 250 mg is the labeled extract amount and that its actual silymarin content is not stated.

Who is it not for

It is not suited to anyone trying to manage hepatitis, cirrhosis, fatty liver disease, abnormal liver tests, gallbladder disease, high cholesterol, or medication-related liver injury without clinician care. It is also not appropriate for people who are pregnant, nursing, under 18, or allergic to ragweed, daisies, chrysanthemums, or marigolds. People taking prescription or over-the-counter medicines, especially anticoagulants, diabetes medicines, or medicines with narrow dosing margins, should ask a pharmacist or clinician first. Those requiring independently certified potency and contaminant results need more documentation than is public here.

Integrity

Milk thistle is generally well tolerated orally, but digestive symptoms and allergic reactions can occur. The product label appropriately tells people who are pregnant or nursing, taking medication, planning a medical procedure, or allergic to ragweed or daisy-like flowers to avoid use or consult a clinician. That is important because pregnancy and breastfeeding data are limited, and milk thistle can interact with medicines. The brand states that this capsule is vegan, made in the United States, GMP compliant, and third-party tested at an ISO 17025-certified laboratory. Those statements were not backed by a public finished-lot certificate showing silymarin potency, botanical identity, or contaminant results. No organic certification, farm-level sourcing documentation, packaging-material specification, or meaningful recyclability guidance was found. The recorded label says to recycle, but does not identify the bottle material or provide local recycling instructions.

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#2 - Hot Deal

Zazzee Organic Milk Thistle 7500 mg 120 Vegan

Buyer Score 95/100Integrity Score 67/100Zazzee

Overview

This is a 120-capsule vegan milk thistle product intended for adults. The documented label directs one capsule one to three times daily with food. Each capsule is labeled as 250 mg of milk thistle seed extract, described as a 30:1 extract equivalent to 7,500 mg whole seed and standardized to provide 200 mg silymarin flavonoids. The other listed ingredients are pullulan, rice powder, rice, acacia powder, and sunflower oil. The formula is a relatively simple single-botanical product, and the label provides practical allergy, medication, pregnancy, and nursing cautions. Its stated liver and antioxidant support uses should remain limited claims. Human research has not established milk thistle as a treatment for liver disease, and the evidence for liver outcomes remains conflicting or insufficient.

What works

• The documented label identifies the botanical as milk thistle seed extract and states a specific 200 mg silymarin amount per capsule.
• The formula avoids a broad stack of liver, bile-flow, or absorption-enhancing ingredients.
• The label specifically advises adults taking medication, pregnant or nursing people, and people with medical conditions to consult a clinician.
• The label calls out allergy risk for the ragweed family, including daisy, marigold, and chrysanthemum.
• The product page provides a company email address and mailing address, while the label information includes serving size and directions.

What does not

• There is no public independent certification or retail-sample test located for this exact finished product, so label accuracy and contaminant control are not independently established.
• The company says ingredients are third-party tested, but it does not publish an accredited, lot-specific finished-product certificate covering silymarin, pesticides, mycotoxins, microbes, and adulterants.
• The product page uses detox language and features disease-oriented customer stories. Those implications go beyond the limited and inconclusive human evidence for milk thistle in liver disease.
• The product page says it is made in an FDA certified facility. FDA states that it does not approve dietary supplement manufacturing facilities or issue dietary supplement cGMP certification.
• FDA issued Zazzee Naturals a warning letter on October 30, 2023 over disease claims for a different liquid MSM eye product. This does not identify a defect in this milk thistle product, but it is relevant to the company’s prior marketing compliance record.

Who is it for

This product fits an adult who specifically wants a simple milk thistle capsule rather than a multi-ingredient liver blend, prefers vegan capsule materials, and is comfortable treating the stated 200 mg silymarin amount as a manufacturer label claim rather than independently verified potency. It is most practical for someone planning a one-capsule daily routine, since the 120-capsule bottle is presented as a four-month supply at that use level. It is not a substitute for medical assessment of abnormal liver tests or diagnosed liver disease.

Who is it not for

It is not appropriate for people seeking treatment for hepatitis, cirrhosis, fatty liver disease, gallbladder disease, poisoning, or medication-related liver injury. Those uses require medical care, and milk thistle has not been shown to reliably treat those conditions. People who are pregnant, breastfeeding, taking prescription medicines, preparing for surgery, or managing a medical condition should seek clinician guidance first. Anyone allergic to ragweed, daisies, marigolds, chrysanthemums, or related plants should avoid it unless a clinician says otherwise. Buyers requiring public, lot-specific contaminant and potency testing should choose a product that publishes it.

Integrity

The label and product page represent this as vegan, gluten-free, and USDA organic. The documented label attributes the organic status to Ecocert SA, but a current official registry record tying that certification to this exact finished product was not located during review. Organic certification can support restrictions on many agricultural inputs, but it does not itself demonstrate finished-product testing for heavy metals, mold toxins, microbes, or silymarin content. The company makes no specific packaging-material, recycled-content, recyclability, farm-origin, or transport-impact disclosure for this product. Its public claim that ingredients are third-party tested is not backed by a public lot-specific finished-product certificate. The company also describes its facility as FDA certified, although FDA does not issue such certification for dietary supplement facilities. FDA’s October 2023 warning letter concerned a different Zazzee product marketed with drug claims, not this milk thistle capsule.

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#3

Zazzee Organic Milk Thistle 20,000 mg, 200 Vegan

Buyer Score 92/100Integrity Score 67/100Zazzee

Overview

This is a 200-capsule, single-botanical milk thistle supplement intended for adults. The public label record lists one veggie capsule daily and 400 mg of milk thistle seed extract per serving, with cellulose, rice powder, magnesium stearate, and silica as other ingredients. That makes the bottle a 200-day supply when used as directed. Zazzee states that the extract is a 50:1 organic extract standardized to 80% silymarin flavonoids, equal to 320 mg silymarin per capsule. Those potency and organic claims are manufacturer-stated, not supported here by a current independent finished-product certification or publicly identified outside laboratory result. Milk thistle has uncertain clinical value for liver conditions, so it should be viewed as a supplement with limited evidence, not as liver treatment or a detoxification remedy.

What works

• The public label record gives a simple formula with one named active botanical and an exact 400 mg extract amount per capsule.
• A 200-capsule bottle provides 200 listed daily servings, which can reduce repeat ordering for people who already use a one-capsule routine.
• Zazzee states 80% silymarin standardization, or 320 mg per capsule, providing a concrete claimed marker amount rather than only an extract ratio.
• The manufacturer states that the product is vegan, gluten-free, and made without common food allergens.

What does not

• The claimed 320 mg silymarin amount is not backed here by a current, independent finished-product certificate or retail-sample test result.
• Public marketing uses liver support and detox language, while human evidence does not establish milk thistle as an effective treatment for liver disease.
• The public product page did not provide practical, ingredient-matched warnings for medication use, ragweed-family allergy, pregnancy, breastfeeding, or surgery.
• FDA sent the responsible Zazzee business a warning letter in October 2023 over disease claims for a different liquid MSM eye product. This is not a recall or finding about this milk thistle product, but it is a relevant accountability concern.

Who is it for

This product fits an adult who has already discussed milk thistle use with a clinician, wants a long supply, and prefers a relatively simple capsule rather than a multi-ingredient liver formula. It is most practical for someone who values a disclosed 400 mg extract amount and is comfortable treating the stated 320 mg silymarin content as a manufacturer claim. It is not appropriate to use it in place of evaluation, monitoring, or prescribed treatment for abnormal liver tests or diagnosed liver disease.

Who is it not for

It is not suited to anyone trying to self-treat hepatitis, fatty liver disease, cirrhosis, jaundice, medication-related liver injury, gallbladder symptoms, or persistently elevated liver enzymes. Pregnant or breastfeeding people should avoid self-starting because safety data are limited. People with ragweed, chrysanthemum, marigold, or daisy allergy may be vulnerable to allergic reactions. People taking prescription or over-the-counter medicines, or preparing for surgery, should get individualized advice from a pharmacist or clinician before use.

Integrity

The manufacturer represents this product as USDA organic, vegan, non-GMO, and made in the United States. USDA Organic is a meaningful production standard when it is supported by a current certified-operation record, but the public materials reviewed did not identify the certifier or provide a readily traceable certificate for this exact finished product. No packaging-material specification or recyclability guidance was found. The manufacturer says ingredients are third-party tested, but it did not publish a current finished-lot report identifying an independent laboratory, assay results for silymarin, pesticide screening, mycotoxins, or residual solvents. Publicly available milk thistle safety guidance notes potential variation in supplement quality and possible pesticide, microbial, or mycotoxin contamination. FDA's October 2023 warning letter to the Zazzee business concerned a different eye-drop product and disease claims, not this capsule product.

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#4

Clean Nutraceuticals Liver Cleanse Detox & Repair Supplement

Buyer Score 89/100Integrity Score 58/100Clean Nutraceuticals

Overview

This is a 60-capsule liver-support supplement intended for adults at two capsules daily, giving a 30-day supply. An independently transcribed retail label identifies 300 mg of 10:1 milk thistle seed extract, plus stated amounts of artichoke, beet root, chanca piedra, dandelion, black pepper, and zinc. It also lists a 350 mg proprietary blend containing numerous additional botanicals, NAC, and TUDCA, so the individual daily exposures for that blend are not knowable. The manufacturer currently markets a 23-ingredient formula for liver support, detox pathways, bile flow, digestion, and daily resilience. Human research on milk thistle for liver diseases remains conflicting or insufficient for firm conclusions, and the label does not state an assayed total-silymarin amount. The manufacturer claims batch testing, but no public lot-specific results or recognized finished-product certification were located.

What works

• The label names the milk thistle species and plant part, Silybum marianum seed extract.
• Several principal ingredients have stated amounts, including 300 mg milk thistle extract per serving.
• The manufacturer provides a two-capsule daily direction, an expiration-date location, a named distributor, and a customer support contact.
• Milk thistle itself is generally well tolerated orally, according to NIH sources, although that does not establish safety for this full multi-ingredient formula.

What does not

• A 350 mg proprietary blend conceals the individual doses of many ingredients, including NAC and TUDCA.
• No publicly available finished-lot certificate was found for silymarin potency, heavy metals, pesticides, microbes, mycotoxins, or adulterants.
• The manufacturer uses detox, cleansing, repair, bile-flow, and liver-cell language that goes beyond the limited and inconclusive human evidence for milk thistle in liver disease.
• Warnings are general rather than ingredient-specific. They do not clearly flag ragweed-family allergy, surgery, gallbladder or bile-duct conditions, or the interaction burden of this large blend.
• NSF published a January 12, 2026 notice stating that Clean Nutraceuticals did not hold NSF GMP certification and that an unauthorized NSF GMP certificate had been distributed under its name.

Who is it for

This product may suit an adult who specifically wants a short, two-capsule daily multi-botanical supplement and understands that it is a general wellness product, not treatment for abnormal liver tests or liver disease. It is most suitable for someone able to review a long ingredient list with a pharmacist or clinician, particularly because the individual exposures within the proprietary blend are not disclosed. The 30-day bottle format may also suit people who prefer a defined monthly routine rather than several single-ingredient products.

Who is it not for

It is not appropriate for people seeking proven treatment for hepatitis, fatty liver disease, cirrhosis, jaundice, persistently elevated liver enzymes, gallbladder disease, or suspected bile-duct obstruction. Pregnant or breastfeeding people, those with ragweed, daisy, marigold, or chrysanthemum allergy, and people preparing for surgery should avoid self-starting it without clinical guidance. People using prescription medicines, anticoagulants, diabetes medicines, blood-pressure medicines, or multiple supplements need ingredient-specific review because this formula combines many botanicals and undisclosed blend doses.

Integrity

The positive traceability elements are a stated two-capsule daily use, 60-capsule bottle, expiration date printed on the bottle bottom, distributor identification, and customer support contact. The label identifies milk thistle as Silybum marianum seed extract, but it does not provide an independently confirmed total-silymarin assay. NIH notes that milk thistle products can vary substantially in actual silymarin content and may have chemical or microbiological quality concerns. Clean Nutraceuticals states that ingredients are sustainably and ethically sourced, products are third-party tested, and manufacturing is in a GMP-certified facility. No organic certificate, farm-level sourcing record, recyclable-packaging specification, public lot-specific testing report, or recognized finished-product certification was located. NSF's January 2026 public notice also says the company did not have NSF GMP certification at that time and was not authorized to claim NSF certification or registration.

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#5

Liver Support & Detox Supplement

Buyer Score 86/100Integrity Score 66/100MEDCHOICE

Overview

This is a 90-count vegan capsule supplement intended for adults, with a suggested use of two capsules daily, preferably with meals. It is marketed for liver, gallbladder, digestive, and bile-flow support. The manufacturer states that a two-capsule serving provides 400 mg of milk thistle extract standardized to 80% silymarin, which equals 320 mg of claimed silymarin, within a 1,400 mg total blend. The formula is marketed as 25-in-1 and includes NAC, artichoke, dandelion, turmeric, choline, zinc, black pepper extract, and several other botanicals. However, individual amounts for ingredients other than milk thistle were not publicly provided. The product uses liver detox and reset language, although human evidence does not establish oral milk thistle as a treatment for liver disease. No public lot-specific certificate of analysis, recognized finished-product certification, or independent testing result for this product was located.

What works

• The manufacturer discloses a 400 mg milk thistle extract dose and an 80% silymarin standardization claim, equal to 320 mg claimed silymarin per serving.
• A two-capsule daily direction and 90-capsule bottle create a straightforward 45-day routine when used as directed.
• The manufacturer states that the capsules are vegan and free of artificial colors, fillers, and preservatives.
• A public brand contact page provides a phone number, email address, and customer-support route for product concerns.

What does not

• The 25-ingredient blend does not publicly disclose the individual daily amount of NAC, artichoke, dandelion, turmeric, black pepper extract, or most other active ingredients.
• No public finished-lot certificate of analysis was found for identity, silymarin assay, heavy metals, pesticides, microbial limits, mycotoxins, or adulterants.
• The bottle's third-party tested and good manufacturing practices graphics do not identify a laboratory, certifier, testing method, test date, or batch result.
• Liver detox, internal reset, bile-flow, and gallbladder-support marketing goes further than the inconclusive human evidence for milk thistle in liver disease.
• Public product materials reviewed did not show practical warnings for medication use, ragweed-family allergy, pregnancy, breastfeeding, surgery, or diagnosed liver and gallbladder conditions.

Who is it for

This product is most suited to an informed adult who wants a convenient, short-term wellness supplement containing a manufacturer-stated 320 mg silymarin exposure per daily serving, plus several undisclosed-dose botanicals and nutrients. It may fit someone who already understands that liver support is a structure-function marketing claim, not treatment for abnormal liver tests or a diagnosed condition. The 90-capsule bottle provides about 45 days at the stated two-capsule daily use. It is also relevant for adults specifically seeking a manufacturer-stated vegan capsule without artificial colors, fillers, or preservatives.

Who is it not for

It is not appropriate as a substitute for medical assessment or treatment of fatty liver disease, hepatitis, cirrhosis, jaundice, persistently abnormal liver tests, gallstones, bile-duct obstruction, or serious digestive symptoms. Pregnant or breastfeeding people should avoid self-starting it because safety information for milk thistle is limited. People with ragweed, chrysanthemum, marigold, daisy, or related plant allergies should be cautious. Anyone taking prescription medicines, preparing for surgery, or managing multiple health conditions should consult a clinician or pharmacist first, especially because the blend includes many ingredients with undisclosed individual doses.

Integrity

Milk thistle itself is generally well tolerated in oral use, but digestive symptoms and allergic reactions can occur. National health guidance says human studies have not established clear benefit for liver diseases, and it specifically advises people who take medicines to consult a health professional. The same guidance notes limited pregnancy and breastfeeding safety information. This matters here because public materials reviewed did not present detailed safety directions matched to the complete 25-ingredient blend. The manufacturer markets the product as non-GMO, gluten-free, vegan, third-party tested, and made with good manufacturing practices. No recognized certification registry entry, public lot-specific laboratory report, organic certification, botanical sourcing documentation, packaging-material specification, or recycling instruction was located. The bottle appears to be plastic, but its resin type and recycled content are not publicly specified. No relevant FDA recall or warning letter was identified in the searches completed for the named brand and product.

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#6

Liver Cleanse & Repair Formula with Milk Thistle

Buyer Score 85/100Integrity Score 66/100Natures Craft

Overview

This product is a 70-capsule adult herbal supplement intended for a two-capsule daily routine, preferably 20 to 30 minutes before a meal. At that use rate, the catalog unit supplies 35 days. It combines milk thistle with zinc, choline, artichoke, beet, dandelion, chanca piedra, chicory, yarrow, jujube, and a larger proprietary botanical blend. Current brand label imagery for its Liver Support capsule lists 200 mg milk thistle seed extract per two-capsule serving, but does not state a standardized total-silymarin amount. The exact finished Liver Support capsule is independently listed as NSF/ANSI 173 certified. That is meaningful outside verification, although no public lot-specific certificate or silymarin assay was located. The marketing uses cleanse, detox, and repair language, while human evidence for milk thistle in liver disease remains inconclusive. The brand page also posts a California lead exposure warning.

What works

• The finished Liver Support capsule is listed in NSF's official NSF/ANSI 173 dietary-supplement registry.
• The current label provides a specific two-capsule serving and lists 10 mg zinc, or 91% Daily Value.
• The current labeled formula identifies its principal botanicals and lists capsule excipients, including hypromellose, rice flour, and ascorbyl palmitate.
• The label advises consulting a physician for pregnancy, nursing, and use by people under 18.

What does not

• Milk thistle is listed as seed extract, not as a standardized silymarin extract. No public finished-lot assay confirms total silymarin or the botanical identity of the sold bottle.
• A 574 mg proprietary blend contains multiple botanicals and berberine hydrochloride without individual amounts, limiting assessment of daily exposure and interactions.
• The product page's cleanse, detox, toxin-flushing, and repair claims go beyond what human milk-thistle research has established for liver conditions.
• The brand page carries a California warning that the product can expose users to lead, and a California Proposition 65 60-day notice filed on May 8, 2026 identifies Liver Cleanse Detox & Repair supplements and lead.

Who is it for

This is most suited to an adult who specifically wants a broad, capsule-based botanical supplement and values independent finished-product certification. The two-capsule routine is straightforward, and the formula also supplies 10 mg zinc and 12 mg choline per daily serving. It is better framed as a general supplement for a person without a diagnosed liver condition who has reviewed the full ingredient panel and can discuss its use with a clinician or pharmacist, particularly if using other supplements.

Who is it not for

It is not suited to anyone seeking treatment for fatty liver disease, hepatitis, cirrhosis, abnormal liver tests, gallbladder disease, or suspected toxin exposure. Those situations need clinical evaluation, not a detox product. Pregnant or breastfeeding people, people under 18, and people with ragweed, daisy, chrysanthemum, marigold, artichoke, or related plant allergies should avoid self-starting it without professional guidance. It also needs pharmacist review for people taking prescription drugs, especially narrow-therapeutic-window, blood-sugar, blood-thinning, cancer, or liver-metabolized medicines.

Integrity

The strongest quality finding is independent certification. NSF's official registry lists Nature's Craft Liver Support capsules under NSF/ANSI 173 with a two-capsule serving. That supports ongoing review against NSF dietary-supplement requirements, but it is not a public lot-specific certificate showing measured lead, pesticide, microbe, mycotoxin, or total-silymarin results for a particular bottle. There is a material safety concern to weigh. Nature's Craft's current product page posts a California warning for lead exposure. Separately, the California Attorney General records a Proposition 65 60-day notice filed May 8, 2026 that names Liver Cleanse Detox & Repair Supplements and lead. The notice is an allegation, not a final finding, but it makes transparent contaminant documentation particularly important. The brand states that ingredients are responsibly sourced, but no organic certification, farm-level sourcing record, packaging-material specification, or recycling instructions were found.

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#7

Liver Support Supplement with NAC and Herbal Extracts

Buyer Score 82/100Integrity Score 70/100Natures Craft

Overview

This is a 120-capsule adult supplement taken as two capsules daily with meals, providing 60 servings. The published Supplement Facts list 200 mg of 4:1 milk thistle seed extract, 30 mg choline, and 10 mg zinc per daily serving. It also includes a 380 mg proprietary botanical blend and a 350 mg proprietary amino-acid blend containing NAC, glutathione, and taurine. The most important quality finding is that NSF’s official dietary-supplement registry lists Nature’s Craft Liver Support capsules at the same two-capsule daily serving. That is independent finished-product certification. However, the public label does not state an assayed total-silymarin amount, and it does not disclose individual amounts for NAC or the numerous ingredients in the two proprietary blends. Marketing references liver cleansing, detoxification, repair, and cell regeneration, while human evidence for milk thistle in liver disease remains uncertain.

What works

• The official NSF dietary-supplement registry lists Nature’s Craft Liver Support capsules with a two-capsule daily serving.
• The published label provides a practical 60-day supply and identifies the main milk thistle extract quantity, choline, zinc, capsule material, and suggested use.
• The manufacturer-stated warning advises against use during pregnancy or nursing, by people under 18, and without clinician input for people using blood thinners, other medicines, or with medical conditions.
• Milk thistle itself is generally well tolerated in oral use, and it has not been linked to clinically apparent liver injury.

What does not

• The formula makes detox, cleansing, repair, and liver-cell-regeneration claims that go beyond the limited and conflicting human evidence for milk thistle.
• The label does not provide a specifically assayed total-silymarin amount, so the daily exposure to milk thistle’s principal constituents cannot be established from the label.
• Two proprietary blends conceal the individual doses of NAC, glutathione, taurine, berberine, ginseng, feverfew, and numerous botanicals.
• Warnings do not specifically flag ragweed-family allergy or planned surgery, despite milk thistle allergy concerns and the formula’s multiple botanicals.
• No public lot-specific certificate of analysis was located that reports finished-product results for elemental contaminants, pesticides, microbes, mycotoxins, or silymarin potency.

Who is it for

This product is most suited to an adult who wants a two-capsule daily botanical and antioxidant blend, prefers a 60-day bottle, and values the added assurance of an NSF-listed finished product. It may fit someone seeking general dietary supplement use rather than treatment for a diagnosed liver condition. The buyer should be comfortable with a broad multi-ingredient formula and with the fact that several ingredient amounts, including NAC, are not individually disclosed.

Who is it not for

It is not well suited to anyone trying to manage fatty liver disease, hepatitis, cirrhosis, abnormal liver tests, gallbladder symptoms, or suspected medication-related liver injury. Those situations need medical assessment, not a detox or repair supplement. Pregnant or breastfeeding people, minors, people using blood thinners or other medicines, and those with chronic conditions should seek clinician advice first. People allergic to ragweed, daisies, chrysanthemums, marigolds, or related plants should be particularly cautious.

Integrity

The clearest quality positive is independent certification. NSF’s official registry lists Nature’s Craft Liver Support as an NSF/ANSI 173 dietary supplement, which is stronger evidence than a brand-only statement about testing or manufacturing practices. The published label identifies a milk thistle seed extract, but it gives an extract ratio rather than a measured total-silymarin result. It also combines many botanicals and amino acids in proprietary blends, which limits dose-level safety assessment. Milk thistle is usually well tolerated, but digestive effects and allergic reactions can occur. National health guidance notes particular allergy concern for people sensitive to ragweed-family plants, and evidence is insufficient to establish safety in pregnancy or breastfeeding. Searches of FDA recall, warning-letter, and health-fraud resources did not identify a product-specific enforcement action in the reviewed materials. The formula includes organic turmeric in a blend, but no public farm-level sourcing, broader organic certification, packaging-material specification, or recyclability instructions were located.

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#8

Purify Life Sugar-Free Milk Thistle Gummies

Buyer Score 81/100Integrity Score 65/100Purify Life

Overview

This is a 60-count, sugar-free milk thistle gummy supplement intended for adults who prefer a chewable alternative to capsules. The manufacturer directs two gummies daily, presenting the bottle as a 30-day supply. It states that each serving contains 100 mg of 10:1 milk thistle extract, described as equivalent to 1,000 mg of raw herb. The product identifies milk thistle as Silybum marianum, but it does not publicly provide a finished-lot certificate showing a silymarin assay, botanical identity test, or contaminant results. Its current marketing goes beyond modest wellness support, with detox, cleanse, liver protection, repair, and hangover-relief language. Human research has not established milk thistle as an effective treatment for liver disease, and the stated extract amount cannot be translated into a daily silymarin dose because no standardization percentage is disclosed.

What works

• The manufacturer clearly states a two-gummy daily serving and 30-day bottle capacity.
• It uses a single named botanical extract rather than a multi-herb liver blend, based on the manufacturer’s product description.
• The manufacturer states that the gummies are sugar-free, pectin-based, gelatin-free, vegan, gluten-free, and non-GMO.
• A responsible firm contact, mailing address, and email are publicly listed on the manufacturer’s site.

What does not

• No public finished-lot certificate was found for this product to verify silymarin content, heavy metals, pesticides, microbes, mycotoxins, or adulterants.
• The 10:1 extract claim is not the same as a quantified silymarin dose, so the biologically relevant daily exposure remains unknown.
• Marketing claims for liver detox, repair, protection, and hangover relief exceed what controlled human evidence establishes for milk thistle.
• The manufacturer posts a California Proposition 65 notice but does not publicly identify the chemical, exposure level, or product-specific test result behind it.
• Public product information does not show practical warnings for pregnancy, breastfeeding, ragweed-family allergy, prescription medicines, or surgery.

Who is it for

This product is most suited to an adult who already understands that milk thistle is an optional herbal supplement, not liver treatment, and who specifically needs a sugar-free chewable format rather than capsules. The stated serving is simple, two gummies daily, and the 60-gummy bottle is designed to last about one month. It may fit a vegan buyer who accepts manufacturer-stated claims about pectin, gelatin-free ingredients, and non-GMO status, and who has reviewed their medicines and health history with a clinician or pharmacist.

Who is it not for

It is not suited to anyone seeking treatment for fatty liver disease, hepatitis, alcohol-related liver disease, jaundice, gallbladder symptoms, or a hangover remedy with established clinical benefit. People who are pregnant or breastfeeding should avoid self-starting it because safety data are limited. It is also a poor fit for people with ragweed, daisy, chrysanthemum, marigold, or related plant allergies, and for people using prescription drugs, particularly narrow-therapeutic-window medicines, anticoagulants, diabetes medicines, or cancer therapies, without professional review.

Integrity

Milk thistle itself is generally well tolerated in oral use, but it can cause digestive effects and allergic reactions in people sensitive to related Asteraceae plants. National Institutes of Health guidance says evidence is insufficient to reach firm conclusions about milk thistle for liver conditions. The product’s liver repair, detox, protection, and hangover language should therefore not be read as established clinical outcomes. Purify Life says its products undergo third-party testing and are made in a GMP-registered facility, but no publicly available certificate was located for this exact gummy product. There is no public finished-lot documentation for identity, silymarin potency, or contaminant testing. The product page includes a California Proposition 65 notice without naming the substance or exposure. No product-specific USDA Organic, USP, NSF, or ConsumerLab certification was found. The gummy format uses a manufacturer-stated pectin base, but no verified botanical sourcing or packaging recyclability information was located.

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#9

FarmHaven Milk Thistle Extract - 120 Veggie

Buyer Score 79/100Integrity Score 66/100FarmHaven

Overview

This is a 120-capsule milk thistle supplement intended for adults. FarmHaven directs users to take one 375 mg vegetarian capsule once or twice daily. The manufacturer states that each capsule supplies a 30:1 organic milk thistle seed extract standardized to 80% silymarin, or 300 mg silymarin. That makes the stated daily exposure 300 to 600 mg. The formula is simple, with milk thistle extract plus cellulose, magnesium stearate, silica, and organic rice flour. The bottle image carries a USDA Organic seal, and the manufacturer describes the product as vegan, non-GMO, and made in the United States. Those product-specific quality and potency figures are manufacturer statements, not independently confirmed finished-lot results. Independent retail testing located for the milk thistle category did not include this product.

What works

• Simple, single-botanical formula with the daily directions and nonactive ingredients publicly disclosed.
• The manufacturer gives a specific silymarin target, 300 mg per capsule, rather than relying only on a raw-herb equivalent.
• The product page includes a practical ragweed and daisy-family allergy warning.
• A responsible firm, customer-service email, telephone number, and U.S. mailing address are publicly listed.

What does not

• No public, lot-specific finished-product certificate was located for silymarin assay, botanical identity, metals, pesticides, microbes, mycotoxins, or adulterants.
• No current independent certification or public retail-sample test was located for this exact product.
• The safety information does not specifically address pregnancy, breastfeeding, surgery, or medication use, despite authoritative guidance advising medical review for people taking medicines.
• Marketing goes beyond restrained liver-support language, including detoxification, liver-cell growth, blood glucose, skin, brain, and bone claims. Human evidence for liver disease remains conflicting or too limited for conclusions.
• The USDA Organic claim and seal were visible, but a named certifier and public certificate for this product were not located.

Who is it for

This product fits an adult who specifically wants a straightforward milk thistle extract, prefers capsules over powders, and can use a manufacturer-stated 300 mg silymarin capsule once or twice daily. The 120-count bottle suits a one to four month routine depending on the chosen label direction. It is most appropriate for someone treating it as a limited wellness supplement, not as a response to symptoms, abnormal liver tests, alcohol-related liver injury, viral hepatitis, fatty liver disease, or a need for medical detoxification.

Who is it not for

It is not suited to anyone pregnant, breastfeeding, preparing for surgery, taking prescription medicines, or managing diabetes without review by a clinician or pharmacist. People allergic to ragweed, daisies, chrysanthemums, marigolds, or related plants should avoid it according to the manufacturer. It is also not appropriate as a substitute for diagnosis or treatment of liver or gallbladder disease. Buyers who require independently verified potency, contaminant results, named organic certification, or lot-level testing should not assume those assurances from the claims shown here.

Integrity

The bottle image shows a USDA Organic seal, and FarmHaven calls the milk thistle extract organic. The product page also describes a vegan formula that excludes gluten, corn, soy, preservatives, and artificial ingredients. However, the verification review did not locate a named organic certifier or public certificate tied to this product, so the organic status remains a label claim rather than an independently traceable product record. Milk thistle is generally well tolerated orally, but digestive effects and allergic reactions can occur. NCCIH specifically notes possible reactions in people sensitive to ragweed-family plants and advises people taking medicines to consult a health professional. The manufacturer provides an allergy warning, but does not provide equivalent practical warnings for medicines, pregnancy, breastfeeding, or surgery. No relevant FDA recall, warning letter, or health-fraud notice was located for FarmHaven or its identified responsible firm in the searches performed. No packaging material specification or recycling guidance was found.

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#10

FarmHaven Organic Milk Thistle 240 Veggie Capsules

Buyer Score 77/100Integrity Score 62/100FarmHaven

Overview

This is a 240-capsule milk thistle supplement marketed for adult liver support. The product listing describes one vegan capsule as providing 300 mg of silymarin from a 30:1 organic Silybum marianum seed extract, standardized to 80% silymarin. Independent reseller records repeat the 240-capsule count and 300 mg claim. The manufacturer’s current direct product page describes a related 120-capsule version with the same claimed 300 mg silymarin amount and directions of one capsule once or twice daily. That page includes a ragweed and daisy-family allergy warning. However, its marketing extends to detoxification, liver cell growth, skin, brain, bone, and blood-glucose effects. Human evidence for milk thistle in liver disease remains conflicting or insufficient for firm conclusions.

What works

• A single-botanical formula avoids stacking multiple liver, bile-flow, or absorption-enhancing ingredients.
• The manufacturer provides a practical warning for people allergic to ragweed or daisy-like flowers.
• The 240-capsule format can cover about 120 to 240 days under the manufacturer’s one-to-two-capsule daily directions.
• A published manufacturer-associated certificate reports low measured lead, arsenic, cadmium, and mercury, plus passing microbiological results for one identified lot. It is not independent verification of this 240-capsule product.

What does not

• The product’s 240-capsule listing, the current manufacturer page, and the published certificate do not fully agree on capsule count, ingredient presentation, or stated amounts. This is a traceability problem, not merely missing evidence.
• No current independent certification or public retail-sample testing was located for this exact finished product. ConsumerLab’s current milk thistle testing did not include FarmHaven.
• The available certificate is issued for a 60-capsule lot manufactured for another named firm and uses an in-process test for botanical ingredients. It does not provide a finished-lot HPLC total-silymarin assay, pesticide, mycotoxin, or residual-solvent result.
• Detoxification and broad liver-repair style claims overstate what human research can establish. NCCIH reports conflicting or too-limited trial results for liver diseases.
• The manufacturer warning does not address medicines, pregnancy, breastfeeding, surgery, or other high-risk use. NCCIH advises people taking medicines to consult a health professional and notes limited pregnancy and breastfeeding safety data.

Who is it for

This product fits an adult who specifically wants a simple milk thistle capsule rather than a broad liver-support blend, accepts a manufacturer-stated 300 mg silymarin claim, and can use a large supply format. It is most relevant to someone seeking general supplement use, not treatment for liver symptoms or diagnosed disease. The buyer should have no known ragweed, chrysanthemum, marigold, or daisy allergy, and should be able to confirm the lot number and expiration date on the bottle received.

Who is it not for

It is not appropriate as a substitute for evaluation or treatment of hepatitis, cirrhosis, fatty liver disease, gallbladder symptoms, jaundice, unexplained itching, easy bruising, or persistent digestive symptoms. Milk thistle has not been established as an effective treatment for these conditions. People who are pregnant, breastfeeding, taking prescription or over-the-counter medicines, preparing for surgery, or allergic to ragweed-family plants should consult a clinician before use. Those requiring independently certified potency and contaminant testing should seek a product with current finished-product verification.

Integrity

FarmHaven markets this as organic, vegan, non-GMO, gluten-free, and made in the United States. Its direct page also says manufacturing occurs in an NSF-certified cGMP facility. The product page does not identify the organic certifier, provide a public organic certificate, name the manufacturing facility, or provide packaging material and recycling instructions. The organic and facility statements therefore remain manufacturer claims rather than traceable product-level certifications. A publicly posted certificate for a separate 60-capsule organic milk thistle lot reports ICP-MS heavy-metal results and USP-based microbiological checks. It does not establish the quality of this 240-capsule product, and it lacks reported pesticide, mycotoxin, residual-solvent, and independently performed final-product potency testing. This matters because NCCIH notes documented quality concerns with some milk thistle supplements, including contamination and silymarin amounts that differ from labels.

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