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GLA Gamma Linolenic Acid

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GLA (gamma-linolenic acid) is an omega-6 polyunsaturated fatty acid found primarily in plant oils such as borage seed, evening primrose, and black currant seed oils. It is converted in the body to anti-inflammatory compounds that may support joint health, skin condition, and hormonal balance. GLA is distinct from other omega-6 fatty acids due to its potent anti-inflammatory properties.

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Benefits

Joint health and rheumatoid arthritis support
Skin condition improvement
Hormonal balance
Anti-inflammatory effects
Immune function support

Dosage

Typical Dose

1.4–2.8g daily

Upper Limit

2.8g daily

Timing

With meals for optimal absorption

Forms & Bioavailability

Borage seed oil softgels

High GLA concentration (20–24%); excellent absorption when taken with fat-containing meals

Evening primrose oil softgels

Moderate GLA concentration (8–10%); requires higher doses for equivalent GLA intake

Black currant seed oil softgels

Moderate GLA concentration (15–17%); good bioavailability

Side Effects

Mild gastrointestinal upset (nausea, bloating)
Headache
Indigestion
Skin irritation in rare cases

Interactions

Blood thinners (warfarin, aspirin): may potentiate anticoagulant effects
Immunosuppressants: GLA may enhance immune function
NSAIDs: combined anti-inflammatory effects may increase risk of gastrointestinal issues

Research Summary

Clinical trials demonstrate GLA's efficacy in reducing symptoms of rheumatoid arthritis, with several studies showing improvements in joint pain, swelling, and function. Research supports benefits for atopic dermatitis and other inflammatory skin conditions, though results are mixed for hormonal symptoms. Long-term safety is generally established, though additional research is ongoing regarding optimal dosing and patient-specific efficacy.

The Bottom Line on GLA Gamma Linolenic Acid

GLA Gamma Linolenic Acid is well-researched with strong evidence supporting its primary benefits.It is most commonly used for joint health and rheumatoid arthritis support and skin condition improvement. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.

About Our Research

This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.

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Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement, especially if you have existing health conditions or take medication.

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