PlainVitamins

fatty acid

Gamma Linolenic Acid supplements

Half of the 740 gamma linolenic acid supplements in the NIH label database that print an amount list 90 mg or less per serving; the middle half list 42 mg to 160 mg (DSLD version 9.4.0, January 2026).

Products listing it
823740 print an amount; 80 list it inside a blend without an amount
Median per serving
90 mgmiddle half 42 mg to 160 mg

How much gamma linolenic acid do supplements contain?

The median product lists 90 mg per serving. One in ten lists 18 mg or less, one in ten 240 mg or more. The amount printed most often is 45 mg (51 products).

Products by amount of gamma linolenic acid per serving

740 products, log scale; extreme 0.2% at each end left out of the drawing.

Gamma Linolenic Acid: products by amount per serving3 mg10 mg30 mg100 mg
Gamma Linolenic Acid: products by amount per serving3 mg10 mg30 mg100 mg300 mg
Gamma Linolenic Acid: products by amount per serving3 mg10 mg30 mg100 mg300 mg
Gamma Linolenic Acid: products by amount per serving3 mg10 mg30 mg100 mg300 mg
Gamma Linolenic Acid: products by amount per serving3 mg10 mg30 mg100 mg300 mg
The amounts printed most often
Amount per servingProductsFor example
45 mg51 Evening Primrose Oil 500 mg (Vitamin World); Evening Primrose Oil 500 mg (Nature's Bounty); Evening Primrose Oil 500 mg (Vitabase)
50 mg40 Evening Primrose Oil 500 mg (VitaCeutical Labs); Evening Primrose Oil 500 mg (Nature's Harmony); Evening Primrose Oil (Metagenics OmegaGenics)
100 mg36 Flax Primrose Combo (Health From The Sun); Evening Primrose Oil (Health From The Sun); Krill Oil 1000 +Joint Support (GNC Triple Strength)
240 mg35 Cholo-Pak (Douglas Laboratories); GLA 240 Gamma-Linolenic Acid (Designs for Health); Gla-240 (Karuna)
90 mg33 Evening Primrose Oil 1000 mg (Sundown Naturals); Natural Evening Primrose Oil 500 mg (Windmill); EPO Evening Primrose Oil 500 (LifeLink)
117 mg28 Evening Primrose Oil 1300 mg (Vitamin World); Evening Primrose Oil 1300 mg (Viva Vitamins); Evening Primrose Oil 1300 mg (Vitabase)
200 mg27 Borage Oil 1,000 mg (VitaCeutical Labs); Pms (Vitabase); OptiMega-3-6 (Bioclinic Naturals)
40 mg25 Black Currant Capsules (Douglas Laboratories); Skin Support Pack (Douglas Laboratories); Dad's Pack (Douglas Laboratories)
30 mg24 Spirulina Organic Tablets (Earthrise); EPA/Gla (Douglas Laboratories); Kid's Factors Extreme Peach Flavor (Natural Factors)
80 mg22 Ultra Preventive V Plus Chel (Douglas Laboratories); Postpartum Omega Mom (Country Life); Black Currant Oil 535 mg (Vitamin World)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most gamma linolenic acid?

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).

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 100 mg; those entered in 2025, 120 mg.

Median gamma linolenic acid per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
201123100 mg
20127670 mg
20136880 mg
201450118.5 mg
201535100 mg
201635100 mg
20175570 mg
20182390 mg
20193475.5 mg
202076100 mg
20217145 mg
20225850 mg
20235190 mg
20245590 mg
202530120 mg

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing gamma linolenic acid by DSLD product type

Gamma Linolenic Acid by product typeFat/Fatty Acid426Other Combinations245Botanical with Nutrients53Botanical8Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Gamma Linolenic Acid by product typeFat/Fatty Acid426Other Combinations245Botanical with Nutrients53Botanical8Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Gamma Linolenic Acid by product typeFat/Fatty Acid426Other Combinations245Botanical with Nutrients53Botanical8Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Gamma Linolenic Acid by product typeFat/Fatty Acid426Other Combinations245Botanical with Nutrients53Botanical8Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Gamma Linolenic Acid by product typeFat/Fatty Acid426Other Combinations245Botanical with Nutrients53Botanical8Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1

Brands listing it most: Douglas Laboratories (27), Barlean's (27), Nature's Way (17), Nordic Naturals (14), Health From The Sun (13), Country Life (11), Source Naturals (11), Wonder Laboratories (10), NOW (10), Solgar (10).

Every product listing gamma linolenic acid

823 products, A to Z by name (page 13 of 17), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

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