PlainVitamins

Mega-GLA 300

by Source Naturals · softgel capsule · 60 softgels

  • On the market (NIH)
  • UPC 0 21078 00910 8
  • DSLD label 275047
  • Serving 1 softgel
  • 60 servings

Mega-GLA 300 by Source Naturals lists 5 ingredients, 5 with an amount per serving of 1 softgel, such as 1.3 g of pure borage seed oil, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on December 13, 2022.

What is in Mega-GLA 300?

Each row as the label prints it, per serving of 1 softgel. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Mega-GLA 300: Supplement Facts rows against the market (DSLD label 275047, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories15 Calories
Total Fat1 g2%Fat (unspecified) in Mega-GLA 300 against 11,965 products1 g per serving; the middle half of products list 1 g to 2.5 g, the median 1.5 g.1 g

56% of 11,965 products listing fat (unspecified) give more (median 1.5 g).

Pure Borage Seed Oil1.3 gBorage Oil in Mega-GLA 300 against 254 products1,300 mg per serving; the middle half of products list 161.5 mg to 1,000 mg, the median 515 mg.1,300 mg

Higher than 92% of 254 products listing borage oil (median 515 mg).

Linoleic Acid477 mgLinoleic Acid in Mega-GLA 300 against 801 products477 mg per serving; the middle half of products list 110 mg to 696 mg, the median 350 mg.477 mg

Higher than 67% of 801 products listing linoleic acid (median 350 mg).

Gamma-Linolenic Acid300 mgGamma Linolenic Acid in Mega-GLA 300 against 740 products300 mg per serving; the middle half of products list 42 mg to 160 mg, the median 90 mg.300 mg

Higher than 94% of 740 products listing gamma linolenic acid (median 90 mg).

Oleic Acid194 mgOleic Acid in Mega-GLA 300 against 694 products194 mg per serving; the middle half of products list 88.5 mg to 370 mg, the median 140 mg.194 mg

Higher than 64% of 694 products listing oleic acid (median 140 mg).

Palmitic Acid112 mgPalmitic Acid in Mega-GLA 300 against 147 products112 mg per serving; the middle half of products list 40 mg to 150 mg, the median 90 mg.112 mg

Higher than 55% of 147 products listing palmitic acid (median 90 mg).

Source: NIH ODS Dietary Supplement Label Database, label 275047 (entered December 13, 2022), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 1,300 mg of pure borage seed oil (filed by NIH under borage oil) is higher than 92% of the 254 borage oil products that print an amount; 6 list more.
  • Its 300 mg of gamma-linolenic acid (filed by NIH under gamma linolenic acid) is higher than 94% of the 740 gamma linolenic acid products that print an amount; 30 list more.

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

6 products list the very same ingredients; the nearest amounts come first.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Use: 1 softgel daily with a meal.
Warnings
NOTE: If you are pregnant or breastfeeding, consult your health care professional before using this product.
Do not use if tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance.
Hexane free
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 275047.

What else is on the label?

Other ingredients: Gelatin, Glycerin, Water, Purified.

How many labels does Mega-GLA 300 have?

2 labels are on file under this name since August 23, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 275047 (current) Entered December 13, 2022 · on the market · 60 softgels · UPC 0 21078 00910 8
  2. Label 272326 Entered August 23, 2022 · on the market · 120 softgels · UPC 0 21078 00083 9

DSLD also links this label to: Mega-GLA 300 Borage Seed Oil (package size difference, same product).

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?