Essential Fatty Acids
Essential fatty acids (EFAs) are polyunsaturated fats that cannot be synthesized by the body and must be obtained through diet. In veterinary medicine, they are primarily used for their anti-inflammatory properties and to support dermatological, cardiovascular, renal, and joint health. * **Omega-3 fatty acids** (EPA, DHA) are typically derived from marine sources (fish oil) and are known for reducing inflammation. * **Omega-6 fatty acids** (Linoleic acid) are crucial for maintaining the epidermal lipid barrier and skin coat quality. > **Clinical Pearl:** The ratio of Omega-6 to Omega-3 is critical; modern pet diets are often heavy in Omega-6, making Omega-3 supplementation highly beneficial for managing inflammatory conditions like osteoarthritis, atopy, and chronic kidney disease.
Mechanism: **Omega-3s (EPA/DHA)** compete with arachidonic acid (an Omega-6) for the enzymes **cyclooxygenase (COX)** and **lipoxygenase (LOX)**. * EPA/DHA → COX/LOX → Production of less inflammatory eicosanoids (e.g., 3-series prostaglandins and 5-series leukotrienes) instead of the highly inflammatory 2-series prostaglandins and 4-series leukotrienes. * **Omega-6s (Linoleic Acid)** → incorporated into the stratum corneum → improves water barrier function and reduces transepidermal water loss (TEWL).
Routes of administration
Contraindications
- Patients with a history of pancreatitis
- Patients with bleeding disorders (use with caution)
Adverse effects
- Gastrointestinal upset (diarrhea, vomiting)
- Weight gain
- Altered platelet function (high doses)
- Pancreatitis (rare, in susceptible individuals due to fat content)
Drug interactions
- Anticoagulants (e.g., Heparin, Warfarin) · May increase risk of bleeding due to altered platelet aggregation
- NSAIDs · Synergistic anti-inflammatory effect (often beneficial, allowing for lower NSAID doses)
Monitoring
- Clinical response (improvement in coat, mobility, or renal values)
- Fecal consistency
- Signs of bleeding (if on high doses)
Overdose
Acute overdose may cause significant gastrointestinal distress, including vomiting, diarrhea, and potentially pancreatitis. Chronic massive overdose may lead to coagulopathies or delayed wound healing. Treatment is supportive.
VetSheet drug reference is intended for licensed veterinary professionals as a clinical decision-support aid, not a substitute for professional judgement or the manufacturer’s current label.