Gamma-Linolenic Acid (GLA) Supplements: Forms, Labels & Evidence

Compare the exact preparation and labeled serving

The checked Evening Primrose Oil softgel contains 1 g seed oil with 90 mg GLA. Black Currant Seed Oil contains 350 mg oil with 47 mg GLA per softgel. Compare those separate declarations rather than calling the total oil weight the active fatty-acid amount.

The amounts below reproduce the inspected manufacturer online panel. They describe labeled servings, not an individualized regimen. Confirm your selected package and review the full ingredient list and dietary attributes on the product page.

Declared manufacturer amounts checked October 14, 2026; compare the exact selected package
Product	Declared serving facts	Important distinction
Evening Primrose OilView product →	Declared serving factsEach Serving Size (1 Softgel) contains: Calories 7, Total fat 1.0 g, Evening Primrose Oil 1.0 g (from Oenothera biennis seed, Containing gamma-linolenic acid (GLA) 90 mg).	Important distinctionRead the complete Evening Primrose Oil ingredient list and current package. The serving facts describe this formula; a shared ingredient does not make it equivalent to another product.
Black Currant Seed OilView product →	Declared serving factsEach Serving Size (1 Softgel) contains: Black Currant Seed Oil 350 mg, Gamma-Linolenic Acid 47 mg.	Important distinctionRead the complete Black Currant Seed Oil ingredient list and current package. The serving facts describe this formula; a shared ingredient does not make it equivalent to another product.

References: WSNC Evening Primrose Oil recorded label details ↗ · WSNC Black Currant Seed Oil recorded label details ↗ · Evening Primrose Oil: Usefulness and Safety | NCCIH ↗

What the ingredient evidence can establish

GLA is an omega-6 fatty acid found in particular seed oils. Its involvement in fatty-acid pathways is a biological explanation, not proof that supplementation improves every inflammatory or hormonal concern.

NCCIH describes insufficient evidence for several promoted uses of evening primrose oil. Research on a specific oil, population and outcome cannot establish equivalent effects for every GLA source or a finished multi-ingredient formula.

References: Evening Primrose Oil: Usefulness and Safety | NCCIH ↗

Review suitability, medicines and the whole formula

Seed-oil supplements can cause digestive effects. Pregnancy, nursing, medicines and planned procedures deserve a label-specific practitioner discussion. A plant oil is not automatically suitable for every dietary restriction because the softgel ingredients also matter.

Clarify whether the question is GLA, total oil or another fatty acid. Use the omega-3 guide for EPA and DHA comparisons rather than assuming all oils serve the same purpose.

References: WSNC Evening Primrose Oil recorded label details ↗ · WSNC Black Currant Seed Oil recorded label details ↗ · Evening Primrose Oil: Usefulness and Safety | NCCIH ↗

Prepare a focused practitioner conversation

Bring the selected label, your reason for considering gamma-linolenic acid (gla), and a list of medicines and other supplements. Compare the intended outcome with the specific preparation studied, and agree how suitability and any benefit will be assessed.

Manufacturer suggested-use text checked for these products: Evening Primrose Oil: 1 capsule 1 - 3 times daily, or as directed. Black Currant Seed Oil: One softgel per meal, or as directed. Warning: Keep out of reach of children.

These are separate product instructions, not one combined supplement schedule. Keep the current package directions with your practitioner plan; ingredient research does not override manufacturer labeling.

References: WSNC Evening Primrose Oil recorded label details ↗ · WSNC Black Currant Seed Oil recorded label details ↗ · Evening Primrose Oil: Usefulness and Safety | NCCIH ↗

Protocol label reading

These kits contain a product compared in this guide. That ingredient match does not establish effects for the complete kit or individual suitability. Review all components with your practitioner.

Common questions

How should I compare gamma-linolenic acid (gla) supplement labels?

The checked Evening Primrose Oil softgel contains 1 g seed oil with 90 mg GLA. Black Currant Seed Oil contains 350 mg oil with 47 mg GLA per softgel. Compare those separate declarations rather than calling the total oil weight the active fatty-acid amount.

Does ingredient research prove the complete formula works?

NCCIH describes insufficient evidence for several promoted uses of evening primrose oil. Research on a specific oil, population and outcome cannot establish equivalent effects for every GLA source or a finished multi-ingredient formula.

What should I discuss before considering gamma-linolenic acid (gla)?

Seed-oil supplements can cause digestive effects. Pregnancy, nursing, medicines and planned procedures deserve a label-specific practitioner discussion. A plant oil is not automatically suitable for every dietary restriction because the softgel ingredients also matter.

Evidence and product label sources

WSNC label links below present recorded Standard Process product information on our site. Noncommercial references explain ingredients, evidence limits and safety; they do not verify every formula amount or establish a treatment outcome for a finished product or protocol. The referenced organizations do not endorse this store.

Manufacturer nutrition-panel amounts shown here were checked October 14, 2026. Confirm the current packaging, directions and dietary information before use. Your healthcare practitioner can help assess individual suitability.

How we research products → · Prepare a practitioner conversation →