Omega-3 fatty acids are used together with lifestyle changes (diet, weight-loss, exercise) to reduce the amount of triglycerides (a fat-like substance) in the blood in people with very high triglycerides. Omega-3 fatty acids are in a class of medications called antilipemic or lipid-regulating agents. Omega-3 fatty acids may work by decreasing the amount of triglycerides and other fats made in the liver.
