Borage oil (Borago officinalis) is a botanical oil used in pet food as a potent source of gamma-linolenic acid (GLA). GLA is the precursor to dihomo-gamma-linolenic acid (DGLA), which is further metabolized into prostaglandin E1 (PGE1), an anti-inflammatory lipid mediator. Borage oil is the richest known source of GLA, typically containing 20-26%. It is clinically utilized to support the management of skin disorders, atopic dermatitis, and systemic inflammatory conditions.
| Scientific Name | Borago officinalis (seed oil) |
| Primary Function | GLA Source / Anti-inflammatory / Skin Support |
| GLA Content | 20-26% (richest botanical source) |
| Linoleic Acid | 35-40% |
| Dog LA Requirement | 1.1% DM (AAFCO min.) |
VetKriter Audit
Borage oil is a highly valuable functional lipid due to its concentrated GLA content. There is strong clinical evidence for its role in skin barrier reinforcement and inflammation reduction. Its presence in therapeutic dermatological diets is a key quality marker.
Nutritional and Clinical Benefits
- Anti-inflammatory Mediator: GLA bypasses the direct rate-limiting enzyme to facilitate PGE1 production.
- Skin Barrier Function: Supports ceramide synthesis, strengthening the moisture-retentive epidermal barrier.
- Atopic Support: Useful in managing pruritus (itching) and skin inflammation in allergic animals.
- Coat Aesthetics: Promotes a glossy, healthy coat structure by optimizing lipid distribution.
Safety: Pyrrolizidine Alkaloids and Oxidation
The borage plant naturally contains pyrrolizidine alkaloids (PAs), which are hepatotoxic. Premium manufacturers utilize borage oil that has undergone specific refining to remove PAs. It is clinically essential that the oil used in pet food is PA-certified. Additionally, due to its high degree of unsaturation, borage oil is highly susceptible to oxidation and requires robust antioxidant protection within the formulation.
Scientific FAQ
Borage Oil vs. Evening Primrose Oil?
Both are GLA sources. However, Borage oil contains 20-26% GLA, whereas Evening Primrose oil typically contains only 8-10%. Borage oil is more concentrated and efficient for therapeutic applications, although Evening Primrose does not inherently carry the pyrrolizidine alkaloid risk found in raw borage plant material.
Scientific References
- Mueller, R.S. et al. (2004). Omega-3 and Omega-6 fatty acids in canine atopic dermatitis. JSAP.
- NRC. Nutrient Requirements of Dogs and Cats. 2006.