botanical

Milk Thistle supplements

Half of the 1,277 milk thistle supplements in the NIH label database that print an amount list 175 mg or less per serving; the middle half list 90 mg to 300 mg (DSLD version 9.4.0, January 2026). The 243 products whose only supplement ingredient is milk thistle list a median of 300 mg.

How much milk thistle do supplements contain?

The median product lists 175 mg per serving. One in ten lists 50 mg or less, one in ten 500 mg or more. The amount printed most often is 100 mg (119 products).

Which products list the most milk thistle?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• Milk Thistle Seed PowderBareOrganics3,000 mg
• Milk ThistleAlvita3,000 mg
• Milk Thistle 600 mgEclectic Institute2,400 mg
• Milk Thistle 600 mgEclectic Herb2,400 mg
• Organic Milk Thistle PowderHerbadiet2,000 mg
• Organic Milk Thistle Tea BagsFGO2,000 mg
• Organic Milk Thistle Tea BagsFGO (From Great Origins)2,000 mg
• Milk Thistle Seed 2,000 mg Alcohol-FreeNature's Answer2,000 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 175 mg; those entered in 2025, 200 mg.

In which products and brands?

Brands listing it most: NOW (28), Nature's Way (26), Protocol For Life Balance (22), Xtendlife (16), Douglas Laboratories (15), Seeking Health (13), Vibrant Health (13), Nature's Answer (13), Pure Encapsulations (13), TerraVita Premium Collection (13).

Every product listing milk thistle

2,308 products, A to Z by name (page 24 of 47), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Milk Thistlegreen fortune175 mg
• Milk ThistleGNC Herbal Plus Standardized200 mg
• Milk ThistleLiveLong · off the market300 mg
• Milk ThistleMaine Coast Herbals · off the marketin a blend
• Milk ThistleDesigns for Health140 mg
• Milk ThistleDaVinci Laboratories Of Vermont · off the market300 mg
• Milk ThistleBronson Laboratories · off the market125 mg
• Milk ThistleGNC Ultra Mega Green · off the market200 mg
• Milk ThistleL.A. Naturals450 mg
• Milk ThistleBioMed Balance · off the market475 mg
• Milk ThistleDoctor's A-Z500 mg
• Milk ThistleFoods Plus · off the market565 mg
• Milk ThistleHerbs Etc.in a blend
• Milk Thistleplnt By V · off the market450 mg
• Milk ThistleIndiana Botanic Gardens100 mg
• Milk ThistleWhole Foods Market450 mg
• Milk Thistleplnt450 mg
• Milk ThistleHerbalist & Alchemistanother unit
• Milk ThistleThymely Solutions450 mg
• Milk ThistleVillage Vitality450 mg
• Milk ThistleSolgar450 mg
• Milk ThistleHigher Naturein a blend
• Milk ThistleSuperiorLabs · off the market250 mg
• Milk ThistleDivine Bounty300 mg
• Milk ThistleLife Extension750 mg
• Milk ThistleFresh Nutrition500 mg
• Milk ThistlePureCo · off the market300 mg
• Milk ThistleNutracraft1,000 mg
• Milk ThistleSonora Nutrition250 mg
• Milk ThistleMental Refreshment250 mg
• Milk ThistlePure320 mg
• Milk ThistleBIOVEA333 mg
• Milk ThistlePurely Beneficial500 mg
• Milk ThistlePurePremium Supplements450 mg
• Milk ThistleNature's Way175 mg
• Milk ThistleWonder Laboratories175 mg
• Milk ThistleAlvita3,000 mg
• Milk ThistleTeraputics Pure Life500 mg
• Milk ThistlePure Herbs1,915 mg
• Milk ThistleKroeger Herb Products Co.475 mg
• Milk ThistleNutraKey Health Performance250 mg
• Milk ThistleEclectic Herbin a blend
• Milk ThistleNature's Answer195 mg
• Milk ThistleHerb Stopin a blend
• Milk ThistleAdvanced Nutrition by Zahler450 mg
• Milk ThistleBest Naturals250 mg
• Milk ThistleNutricost250 mg
• Milk ThistleNusaPure250 mg
• Milk ThistleParadise · off the market250 mg
• Milk ThistleOregon's Wild Harvest1,500 mg

Where next?

• Milk Thistle capsules
• Check an amount of milk thistle
• Labels above the upper limit
• All ingredients