Flaxseed is one of the most beneficial supplements you can add to a horse’s diet. It is the richest plant-based source of alpha-linolenic acid (ALA), an omega-3 fatty acid that reduces inflammation, supports skin and coat health, and helps balance the immune system. Most horse owners notice visible improvements in coat quality within a few weeks, and the research backs up benefits that go well beyond appearance.

Why Omega-3s Matter for Horses

The typical equine diet of hay and grain is heavy in omega-6 fatty acids and relatively low in omega-3s. That imbalance matters because omega-6 and omega-3 fatty acids compete for the same metabolic pathways in the body. When omega-6 dominates, the body produces more compounds that promote inflammation. When omega-3 intake rises, it shifts the balance toward anti-inflammatory responses.

Flaxseed is roughly 45% fat by weight, and about 58% of that fat is ALA omega-3. That means every 100 grams of flaxseed delivers around 26 grams of omega-3. This makes it an efficient, affordable way to correct the omega-6 to omega-3 imbalance that most domesticated horses live with. The downstream effects touch everything from joint comfort to respiratory health to how the immune system handles allergens.