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 27 of 47), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Milk Thistle 500 mgVitamin World1,000 mg
• Milk Thistle 500 mgSwanson · off the market1,000 mg
• Milk Thistle 500 mgAbsorb Health500 mg
• Milk Thistle 500 mgMason Natural500 mg
• Milk Thistle 500 mgGood State500 mg
• Milk Thistle 500 mg Extended ReleaseNatures Plus Herbal Actives500 mg
• Milk Thistle 5000 mgtnvitamins5,000 mg as transcribed, likely a slip
• Milk Thistle 50:1 Extract 400 mgZazzee Naturals400 mg
• Milk Thistle 525 mgFinest Nutrition525 mg
• Milk Thistle 525 mgNatrol525 mg
• Milk Thistle 550 mgherbscience565 mg
• Milk Thistle 560 mgWindmill Natural Vitamins · off the market560 mg
• Milk Thistle 560 mgWindmill560 mg
• Milk Thistle 600 mgEclectic Institute2,400 mg
• Milk Thistle 600 mgEclectic Herb2,400 mg
• Milk Thistle 600 MilligramsNutraBio · off the market600 mg
• Milk Thistle 80Health Concerns200 mg
• Milk Thistle 9000 mgPureCo300 mg
• Milk Thistle Advantage 525 mgNatrol · off the market525 mg
• Milk Thistle Alcohol FreeVillage Vitality333 mg
• Milk Thistle Alcohol FreeHerbal Terra970 mg
• Milk Thistle Alcohol FreeHawaii Pharm1,156 mg
• Milk Thistle Alcohol FreeBrainchild Nutritionalsin a blend
• Milk Thistle Alcohol-FreeNature's Answer · off the market195 mg
• Milk Thistle and Dandelion Combination 450 mgTerraVita Premium Collectionin a blend
• Milk Thistle and Dandelion Combination PowderTerraVita Premium Collectionin a blend
• Milk Thistle and TurmericPuritan's Pride525 mg
• Milk Thistle CombinationNature's Sunshine350 mg
• Milk Thistle CombinationSwanson175 mg
• Milk Thistle ComlexIndiana Botanic Gardens420 mg
• Milk Thistle ComplexSundown Naturalist240 mg
• Milk Thistle ComplexMBi Nutraceuticals150 mg
• Milk Thistle ComplexProgressive Professional from Progressive Laboratories375 mg
• Milk Thistle ComplexSunshine Naturals600 mg
• Milk Thistle ComplexSunergetic450 mg
• Milk Thistle Complex CapsulesEsmond Natural200 mg
• Milk Thistle Complex With Dandelion & TurmericVitamin World175 mg
• Milk Thistle Complex with Dandelion, Fennel, & LicoriceMeijer240 mg
• Milk Thistle DandelionOregon's Wild Harvest540 mg
• Milk Thistle Dandelion & Yellow DockSwanson700 mg
• Milk Thistle Dandelion ExtractOregon's Wild Harvest500 mg
• Milk Thistle Dry Seed ExtractHerbs Etc. · off the marketin a blend
• Milk Thistle ElixirOregon's Wild Harvest · off the market1,000 mg
• Milk Thistle Extra StrengthYerba Prima80 mg
• Milk Thistle ExtractProtocol For Life Balance · off the market300 mg
• Milk Thistle ExtractNatural Goal · off the market300 mg
• Milk Thistle ExtractNature's Origin250 mg
• Milk Thistle ExtractNature's Lab600 mg
• Milk Thistle ExtractMBi Nutraceuticals100 mg
• Milk Thistle ExtractCalifornia Natural · off the market175 mg

Where next?

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