What is the recommended dose of Evening Primrose Oil?

- **Look for:** Cold-pressed EPO, minimum 8% GLA (ideally 10%), 1,000mg+ per capsule - **Avoid:** Products listing only EPO weight without GLA content; heat-processed oils; products stored in clear...

Is Evening Primrose Oil safe to take daily?

Evening Primrose Oil is rated "Generally Safe" based on clinical evidence. Always consult your healthcare provider before starting any supplement.

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Ingredient Research

Graded against 173,636 supplements + 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, NIH DSLD

Evening Primrose Oil

MODERATE EVIDENCESupplementLast updated

AVELOR SUMMARY

Evening primrose oil (EPO) is the primary source of gamma-linolenic acid (GLA), an omega-6 fatty acid that paradoxically has anti-inflammatory effects. Our research shows moderate evidence for diabetic neuropathy (GLA at 480mg/day) and eczema/atopic dermatitis, but the popular use for PMS is NOT supported by rigorous evidence — a 1996 systematic review found it ineffective, and the UK withdrew its pharmaceutical license for this indication. For skin conditions, it takes 4-12 weeks and most studies used higher doses than typical OTC products provide.

WHAT IT DOES

GLA from EPO is converted to DGLA (dihomo-gamma-linolenic acid) which produces PGE1 — a prostaglandin with anti-inflammatory, vasodilatory, and immune-modulating properties. This is unusual because most omega-6 fatty acids are converted to arachidonic acid and pro-inflammatory prostaglandins. The delta-5-desaturase enzyme normally converts DGLA → arachidonic acid, but GLA supplementation overwhelms this step, favoring the anti-inflammatory PGE1 pathway. In diabetic neuropathy, GLA restores nerve blood flow and nerve membrane fatty acid composition.

OPTIMAL DOSAGE

Look for: Cold-pressed EPO, minimum 8% GLA (ideally 10%), 1,000mg+ per capsule
Avoid: Products listing only EPO weight without GLA content; heat-processed oils; products stored in clear containers (GLA is light-sensitive)
Minimum effective dose: 2,000mg/day EPO (providing ~160-200mg GLA)
Third-party tested brands: NOW Foods, Solgar (both specify GLA content)

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SAFETY PROFILE

Critical Interactions (Do Not Combine Without Medical Supervision)

Moderate Interactions (Monitor Closely)

Theoretical/Low-Risk Interactions

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Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:

Not medical advice. Based on published clinical research and systematic reviews.

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