fat

Evening Primrose oil supplements

Half of the 300 evening primrose oil supplements in the NIH label database that print an amount list 500 mg or less per serving; the middle half list 500 mg to 1,300 mg (DSLD version 9.4.0, January 2026). The 27 products whose only supplement ingredient is evening primrose oil list a median of 1,000 mg.

How much evening primrose oil do supplements contain?

The median product lists 500 mg per serving. One in ten lists 150 mg or less, one in ten 1,300 mg or more. The amount printed most often is 500 mg (88 products).

Which products list the most evening primrose oil?

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).

• TransCycle FormulaZahler2,500 mg
• Primrose Liquid GoldHealth From The Sun2,300 mg
• Evening Primrose OilDaVinci Laboratories2,046 mg
• Evening Primrose OilFairhaven Health2,000 mg
• Evening Primrose Oil 2,000 mgNature's Truth2,000 mg
• Evening Primrose OilApproved Science2,000 mg
• Evening Primrose Pearls 500 mgCrystal Star1,500 mg
• Evening Primrose Oil 500 mgMountain Meadow Herbs1,500 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2012 list a median of 500 mg; those entered in 2024, 1,000 mg.

In which products and brands?

Brands listing it most: Nature's Way (9), Nature's Answer (8), Bluebonnet (7), OL Olympian Labs (6), Wonder Laboratories (6), Good 'N Natural (5), GNC Women's (5), Douglas Laboratories (5), DC (5), BulkSupplements.com (5).

Every product listing evening primrose oil

389 products, A to Z by name (page 2 of 8), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Enhanced FocusENP50 mg
• EpoAdaptogen Research1,300 mg
• EPO Evening Primrose OilNutriCology500 mg
• EPO Evening Primrose OilAllergy Research Group500 mg
• EPO Organic 1000 mgMoss Nutrition1,000 mg
• Epo SapNFH1,000 mg
• Equazen Pro Kids SoftgelsEquazen Pro240 mg
• Estera Phase IPharmanex · off the market500 mg
• EstrosalusValentior500 mg
• EstrotoneNew Chapter200 mg
• Eve SoftgelsNOW500 mg
• Evening PrimroseZHOU1,400 mg
• Evening PrimroseNature's Way1,300 mg
• Evening Primrose 1,300 mgNature's Way1,300 mg
• Evening Primrose 1300 mgMeijer Naturals1,300 mg
• Evening Primrose 1300 mgBotanic Choice1,300 mg
• Evening Primrose 1300 mgSR SportsResearch1,300 mg
• Evening Primrose 1300 mgHerbal Secrets · off the market1,300 mg
• Evening Primrose 1300 mgJarrow Formulas1,300 mg
• Evening Primrose 500 mgOL Olympian Labs · off the market500 mg
• Evening Primrose 500 mgSunshine Naturals500 mg
• Evening Primrose 500 mgStandard Vitamins · off the market500 mg
• Evening Primrose and Black Currant Seed OilProCaps500 mg
• Evening Primrose Cold-Pressed Oil 1300 mgSports Research1,300 mg
• Evening Primrose Max StrengthNature's Way · off the market1,300 mg
• Evening Primrose OilBronson500 mg
• Evening Primrose OilMetabolic Maintenance500 mg
• Evening Primrose OilHealth From The Sun1,000 mg
• Evening Primrose OilNewtonEverett · off the market1,300 mg
• Evening Primrose OilNature's Answer · off the market2,000 mg
• Evening Primrose OilProThera · off the market1,300 mg
• Evening Primrose OilOrtho Molecular Products · off the market1,300 mg
• Evening Primrose OilSwanson1,000 mg
• Evening Primrose OilFairhaven Health2,000 mg
• Evening Primrose OilGNC Women's1,300 mg
• Evening Primrose OilAmerican Health Royal Brittany1,300 mg
• Evening Primrose OilNature's Sunshine500 mg
• Evening Primrose OilBluebonnet1,300 mg
• Evening Primrose OilKlaire Labs · off the market1,300 mg
• Evening Primrose OilApollo Sun · off the market1,500 mg
• Evening Primrose OilDaVinci Laboratories2,046 mg
• Evening Primrose OilApproved Science2,000 mg
• Evening Primrose OilBioCare1,000 mg
• Evening Primrose Oil & CranberryWonder Laboratories500 mg
• Evening Primrose Oil (1,000 mg)Windmill1,000 mg
• Evening Primrose Oil 1,000 mgNature's Answer1,000 mg
• Evening Primrose Oil 1,000 mgSpring Valley1,000 mg
• Evening Primrose Oil 1,300 mgVitaCeutical Labs1,300 mg
• Evening Primrose Oil 1,300 mgVSN Vital Strength Nutrition · off the market1,300 mg
• Evening Primrose Oil 1,300 mgVitamer Laboratories · off the market1,300 mg

Where next?

• Check an amount of evening primrose oil
• Labels above the upper limit
• All ingredients