Hermetica Superfood Encyclopedia
The Short Answer
Borage (Borago officinalis) delivers potent anti-inflammatory and skin-barrier repair effects primarily through its gamma-linolenic acid (GLA), which converts to DGLA to suppress TNF-alpha via increased cAMP signaling—a mechanism demonstrated to reduce rheumatoid arthritis activity (PMID 11710548). Its phenolic compounds, including rosmarinic acid, quercetin, and kaempferol, synergistically inhibit pro-inflammatory prostaglandin and leukotriene synthesis, while topical borage oil has been shown to restore epidermal barrier function and reduce transepidermal water loss in dermatological studies (PMID 29280987).
CategoryLeaf & Herb
GroupHerb
Evidence LevelStrong
Primary Keywordborage benefits
Synergy Pairings4
Borage — botanical close-up
Health Benefits
Supports skin health by reducing inflammation and promoting hydration, particularly beneficial for conditions like eczema, due to its GLA content.
Enhances hormonal balance, especially in managing symptoms of PMS and menopause, by modulating prostaglandin synthesis.
Provides significant anti-inflammatory effects through its gamma-linolenic acid (GLA), alleviating symptoms of inflammatory conditions.
Boosts cardiovascular health by potentially reducing blood pressure and improving circulation, though more research is needed.
Promotes mental well-being by reducing stress and anxiety, possibly through its calming effects on the nervous system.
Origin & History
Natural habitat
Borage (Borago officinalis) is an annual herb native to the Mediterranean region, now cultivated globally for its distinctive blue, star-shaped flowers and medicinal properties. Its leaves and seeds are rich in beneficial compounds, particularly gamma-linolenic acid (GLA). Borage is valued in functional nutrition for its capacity to support skin health, hormonal balance, and anti-inflammatory responses.
“Borage has been cherished since ancient times, with references in Roman and Greek texts for its uplifting and medicinal properties. Historically known as 'starflower' or 'herb of gladness,' it was traditionally used in European folk medicine to promote courage, alleviate melancholy, and treat skin ailments and fevers.”Traditional Medicine
Scientific Research
A systematic review in the International Journal of Molecular Sciences (Lin et al., 2017; PMID 29280987) demonstrated that topical application of borage oil improved skin barrier repair and reduced inflammation in dermatitis models. Kast (2001) published in International Immunopharmacology (PMID 11710548) that borage oil's GLA-derived DGLA increased intracellular cAMP, suppressing TNF-alpha production and significantly reducing rheumatoid arthritis disease activity scores. A randomized, double-blind, controlled trial by Jung et al. (2014) in Acta Dermato-Venereologica (PMID 24553997) found that GLA and omega-3 supplementation significantly reduced inflammatory acne lesions after 10 weeks in 45 patients. A 2020 systematic review by Avila et al. in Fitoterapia (PMID 32105669) assessed adverse event case reports for borage, identifying hepatotoxicity risks primarily linked to pyrrolizidine alkaloid content in non-refined preparations.
Preparation & Dosage
Traditional preparation
Common Forms
Borage seed oil (capsules or liquid), dried leaves/flowers for tea, fresh leaves for culinary use.
Borage Seed Oil
500-1000mg of GLA daily, often found in 1000-2000mg capsules of borage oil
For internal use, typically .
Herbal Tea
Steep 1-2 grams of dried borage leaves or flowers in hot water for 10 minutes. Consume 1-2 cups daily.
Topical Use
Borage seed oil can be applied directly to the skin for hydration and soothing effects.
Nutritional Profile
- Fatty Acids: Gamma-Linolenic Acid (GLA) (an omega-6 fatty acid, primary bioactive)
- Vitamins: Vitamin C
- Minerals: Potassium, Calcium, Magnesium
- Phytochemicals: Flavonoids, Tannins
- Other: Pyrrolizidine Alkaloids (PA) (present in leaves; PA-free borage seed oil is recommended for internal use)
How It Works
Mechanism of Action
Borage seed oil contains 20–26% gamma-linolenic acid (GLA), which is enzymatically converted by elongase to dihomo-gamma-linolenic acid (DGLA); DGLA competitively inhibits the cyclooxygenase (COX) and 5-lipoxygenase (5-LOX) conversion of arachidonic acid into pro-inflammatory prostaglandin E2 (PGE2) and leukotriene B4 (LTB4). DGLA also serves as a precursor for the anti-inflammatory prostaglandin E1 (PGE1), which elevates intracellular cyclic adenosine monophosphate (cAMP), thereby suppressing tumor necrosis factor-alpha (TNF-α) and interleukin-1β (IL-1β) release from macrophages and T-cells (PMID 11710548). The herb's polyphenolic fraction—rich in rosmarinic acid, quercetin, and kaempferol—further inhibits NF-κB nuclear translocation and downregulates inducible nitric oxide synthase (iNOS) and COX-2 gene expression (PMID 27247570). Topically, borage oil's linoleic acid and GLA integrate into lamellar lipid bilayers in the stratum corneum, restoring ceramide synthesis and reducing transepidermal water loss (PMID 29280987).
Clinical Evidence
Clinical evidence for borage remains limited, with most data derived from preclinical studies and small human trials rather than large-scale RCTs. Borage oil has been confirmed as safe and effective for dermatitis, PMS, and metabolic markers in diabetic patients, though specific quantified outcomes are not well-documented. In vitro studies demonstrate measurable enzyme inhibition, including BChE inhibition at IC50 of 13.2 ± 1.17 μg and >90% lipoxygenase inhibition comparable to diclofenac controls. Randomized controlled trials specifically examining skin barrier function and hormonal symptoms show promise but require larger sample sizes and standardized endpoints.
Safety & Interactions
Unrefined borage plant parts contain unsaturated pyrrolizidine alkaloids (UPAs) such as amabiline and lycopsamine, which are hepatotoxic and potentially carcinogenic; only certified PA-free borage seed oil should be consumed orally (PMID 32105669; PMID 30000849). Borage oil may potentiate anticoagulant and antiplatelet drugs (e.g., warfarin, aspirin) due to GLA's effect on thromboxane A2 inhibition, increasing bleeding risk, and should be discontinued at least two weeks before surgery. Individuals taking hepatotoxic medications, anticonvulsants (which may lower seizure threshold due to GLA's prostaglandin effects), or NSAIDs should consult a healthcare provider before use. No significant CYP450 interactions have been conclusively documented, but caution is advised with CYP3A4 substrates given preliminary in-vitro data on polyphenol-mediated enzyme modulation.
Synergy Stack
Hermetica Formulation Heuristic
Fat + fiber base
Skin & Collagen | Hormonal Balance
Also Known As
Borago officinalisstarflowerbee breadcool-tankardburrage
Frequently Asked Questions
What are the main health benefits of borage?
Borage benefits center on its exceptionally high GLA content (20–26%), which provides clinically documented anti-inflammatory effects—reducing rheumatoid arthritis activity via TNF-alpha suppression (PMID 11710548)—skin barrier repair for eczema and dermatitis (PMID 29280987), and potential hormonal balance support through prostaglandin E1 modulation. A randomized controlled trial also showed GLA supplementation significantly reduced inflammatory acne lesions (PMID 24553997).
Is borage oil safe to take daily?
Certified pyrrolizidine alkaloid-free (PA-free) borage seed oil is generally considered safe for daily oral use at doses of 1–3 grams. However, a systematic review (Avila et al., 2020; PMID 32105669) identified hepatotoxicity cases linked to non-refined borage products containing pyrrolizidine alkaloids, so sourcing PA-free oil is critical. Pregnant or breastfeeding women and those on blood thinners should avoid borage oil without medical supervision.
How does borage oil compare to evening primrose oil for skin?
Borage seed oil contains approximately 20–26% GLA, nearly double the 8–10% GLA concentration found in evening primrose oil, making it a more potent source per dose. A review in Frontiers in Pharmacology (Poljšak et al., 2022; PMID 35548366) confirmed that GLA-rich plant oils, including borage, demonstrate superior dermal barrier repair and hydration in clinical dermatological applications. This higher GLA concentration may provide faster and more pronounced anti-inflammatory and moisturizing effects for conditions like atopic dermatitis.
Can borage help with depression or mood disorders?
Preliminary evidence suggests borage may have mood-supportive properties. A narrative review in the International Journal of Molecular Sciences (Dobrek, 2023; PMID 36902200) discussed borage among phytopharmacological agents with potential antidepressant activity, attributed to its GLA-mediated prostaglandin modulation and polyphenol-driven antioxidant neuroprotection. However, robust large-scale clinical trials specifically for borage in depression are still lacking.
What are the side effects and risks of borage?
The primary safety concern is pyrrolizidine alkaloid contamination in crude borage leaf and flower preparations, which can cause hepatic veno-occlusive disease (PMID 32105669). Refined PA-free borage seed oil may cause mild gastrointestinal symptoms including bloating and soft stools. Due to GLA's antiplatelet activity, borage oil may increase bleeding risk when combined with anticoagulant medications such as warfarin or heparin.
What is the difference between borage seed oil and borage leaf supplements?
Borage seed oil is extracted from the seeds and contains the highest concentration of GLA (gamma-linolenic acid), typically 17-25%, making it the most potent form for anti-inflammatory and skin benefits. Borage leaf supplements, made from the dried plant material, contain lower levels of GLA and other active compounds, but may include additional phytonutrients and are traditionally used for broader health support. For targeted therapeutic effects, borage seed oil is generally considered more effective, while leaf preparations may offer a gentler, more whole-plant approach.
Is borage safe to take during pregnancy and breastfeeding?
Borage oil is generally not recommended during pregnancy due to limited safety data and potential effects on prostaglandin synthesis, which could theoretically impact pregnancy. While some sources suggest it may be safer during breastfeeding, it is advisable to consult with a healthcare provider before use, as borage compounds can pass into breast milk. Pregnant and nursing women should prioritize caution and seek professional medical guidance before supplementing with borage.
Does borage interact with blood thinners or anticoagulant medications?
Borage oil may have mild blood-thinning properties due to its GLA content and effects on prostaglandin synthesis, which could theoretically potentiate the effects of anticoagulants like warfarin or aspirin. While serious interactions are rare, combining borage supplements with prescription blood thinners requires medical oversight to prevent excessive bleeding risk. Anyone taking anticoagulant medications should inform their healthcare provider before starting borage supplementation.
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