Borage oil is pressed from the seeds of the borage plant (Borago officinalis), a Mediterranean herb with striking blue star-shaped flowers, earning it the nickname 'starflower oil.' It is the most concentrated natural source of gamma-linolenic acid (GLA), an omega-6 fatty acid that most people struggle to produce in adequate amounts. Unlike standard omega-6 fats that tend to drive inflammation, GLA takes a different path and actually helps the body cool it down.

The body converts GLA into a family of hormone-like compounds called prostaglandins — particularly PGE1 — that put the brakes on inflammation, support healthy skin barrier function, and help regulate immune responses. Many people have impaired conversion of dietary fats into GLA due to stress, aging, poor diet, or genetics, so supplementing directly bypasses that bottleneck. By supplying GLA pre-formed, borage oil gives the body a ready-made building block for these calming, regulatory compounds.

Softgel capsules are the most common and convenient form, typically standardized to GLA content. Always choose products certified as pyrrolizidine alkaloid (PA)-free, as borage plants naturally contain low levels of these liver-toxic compounds that should be removed during processing. Topical borage oil is used directly on skin for eczema and dryness.

• Eczema and dry, inflamed skin
• Rheumatoid arthritis and joint pain
• PMS symptoms
• Hormonal acne and skin issues
• Diabetic neuropathy
• Inflammatory skin conditions (psoriasis)
• Dry eye syndrome
• Breast pain (mastalgia)
• Childhood atopic dermatitis

• Progression of mild diabetic nerve damage (when used early)
• Skin barrier breakdown in people with eczema-prone or aging skin

• Borage seeds / borage seed oil — The highest known plant source of GLA, containing 20–26% by weight — far more than any other common food source.
• Evening primrose oil — Contains 8–10% GLA and is the most widely studied alternative to borage oil for the same conditions.
• Black currant seed oil — Contains 15–18% GLA and is available as a supplement; black currants themselves contain small amounts.
• Hemp seeds and hemp seed oil — Contains modest amounts of GLA (2–3%) along with a favorable omega-3 to omega-6 ratio that supports GLA's anti-inflammatory effects.
• Oats — Contain trace GLA and support the enzymatic conversion of linoleic acid to GLA, particularly when consumed as part of a whole-food diet.

• Mild nausea or loose stools (especially when starting)
• Bloating or belching (fishy or plant-oil aftertaste)
• Headache in sensitive individuals
• Potential liver toxicity with low-quality products containing pyrrolizidine alkaloids (choose PA-free certified brands)
• Increased bleeding time at high doses
• Not recommended during pregnancy due to possible uterine-stimulating effects

• Recommended daily: 1,000–3,000 mg borage oil per day (providing approximately 200–720 mg of GLA); therapeutic doses for joint and skin conditions typically aim for 360–720 mg GLA daily
• Best time of day: Any time of day; splitting into two doses (morning and evening) can improve tolerability
• With or without food: Take with food — fat-soluble; a meal containing some healthy fat significantly improves absorption and reduces digestive side effects
• Time to effect: Skin benefits: 6–8 weeks; joint pain relief: 8–12 weeks; hormonal symptom relief: 2–3 menstrual cycles
• How long to take it: Can be taken continuously for chronic skin and joint conditions; reassess every 3–6 months. For PMS and hormonal cycling, some practitioners recommend continuous use rather than cycling.