An omega-3 fatty acid with anti-inflammatory properties.
Along-chain polyunsaturated fatty acid (C20:5 ω3).
Eicosapentaenoic acid (EPA) is a long-chain (20 carbons) omega-3 polyunsaturated fatty acid found primarily in fish oil. EPA is highly unsaturated with five double bonds. The potential role of EPA in athletic performance is described in the entry on omega-3 fatty acids.