Mega-3 is the brand name; the name of the ingredient is omega-3 triglycerides. It is sourced from fish lipid oil and contains eicosapentaenoic and docosahexaenoic acids. It reduces blood fats, particularly triglycerides. Its side effects include nausea, eructation, bleeding disorders and vitamin E deficiency, when used over prolonged periods. It should be used with caution in asthmatics.