This is an excellent product, high in omega-3 fatty acids, which has several benefits (simply search Google, for example). Although the product claims to have a pleasant lemon taste, I find it almost tasteless. Presumably this oil is derived from cold water ocean fish, as opposed to farm cultivated salmon. The latter are contaminated with environmental pollutants, derived from the food fed the farm cultivated fish. eVitamins.com is the least expensive source I could find. Many other sites do not even stock the 500 mL size. Please note, I have no financial interest in either Carlson Labs or eVitamins.com.