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Definition of Eicosapentaenoic acid
Medically reviewed by Min Clinic Staff | Updated: January 2026
Eicosapentaenoic acid: One of the principal omega-3 fatty acids. Abbreviated EPA. The body has a limited ability to manufacture EPA by converting the essential fatty acid, alpha-linolenic acid (ALA) which is found in flaxseed oil, canola oil or walnuts.