EPA (eicosapentaenoic acid) is the anti-inflammatory workhorse among the omega-3 fatty acids. It competes with pro-inflammatory omega-6 metabolites (including arachidonic acid derivatives) for the same enzymatic pathways, effectively dampening excessive inflammatory responses throughout the body. EPA has shown particular promise in supporting cats with chronic kidney disease, inflammatory skin conditions, and arthritis.
A small piece of canned sardine (about 15g) provides roughly 100–150mg of EPA — your adult cat benefits from approximately 5–50mg per day. Fish-based commercial cat foods and small servings of oily fish provide adequate EPA for most cats. Cats with kidney disease or inflammatory conditions may benefit from higher EPA intake under veterinary guidance.
0.1% of daily nutrient intake
EPA makes up 0.1% of your cat's total daily nutritional requirements by weight. That's a tiny amount — but it matters.
No specific EPA deficiency syndrome is recognized in cats, but insufficient omega-3 intake (including EPA) contributes to a pro-inflammatory state that can worsen allergies, skin conditions, joint stiffness, and kidney disease progression.
Very high EPA intake can impair blood clotting and may cause gastrointestinal upset. As with DHA, moderate supplementation from whole-food marine sources is well tolerated.
| Life Stage | Size | Min | Max | Unit | Notes |
|---|---|---|---|---|---|
| Adult | — | 5 | 50 | mg | EPA provides anti-inflammatory benefits. Higher doses may be beneficial for cats with kidney disease or inflammatory conditions under veterinary guidance. |
Source: NRC 2006, general veterinary consensus
DHA and EPA are complementary omega-3 fatty acids with distinct but overlapping roles. DHA is structural (brain, retina) while EPA is functional (anti-inflammatory). Together they provide broader benefits than either alone.
What this means: Feed oily fish like salmon and sardines, which naturally contain both DHA and EPA in complementary ratios. This is more effective than supplements providing only one or the other.
