BioStacks
Natural Factors

Ultra Prim Evening Primrose Oil 500 mg

1 Softgel · 180 servings

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What it does

A combination of 3 label ingredients.

Evening Primrose Oil (GLA)

Form not confirmedGrade —

Studied for breast pain, PMS and eczema; reliable benefits remain unestablished despite its popularity.

GLA (Omega-6)

Form not confirmedGrade —

GLA-rich oils may reduce some rheumatoid-arthritis symptoms; evidence is limited and does not establish general skin or hormone benefits.

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Ingredients (4)

Other ingredients

SoftgelCapsule

One-piece gelatin capsule shell with a plasticizer (typically glycerin), used to encapsulate liquid or oil-based supplements

Mixed TocopherolsAntioxidant

Natural vitamin E used as preservative

Lab testing

How to take it

With or without food

On the label

1 softgel 2-3 times per day or as directed by a health professional.

Price check

$17.47

$0.10 / serving

$10$20$50

Near the median of 34 evening primrose oil (GLA) supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

Not medical advice. Consult your healthcare professional.

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