With over $5 billion in sales in 2019, fish oil supplements are a staple in the vitamin aisle at your local health food store. Fish oil supplements are popular among people who want to add Omega-3 fatty acids to their diet without eating fish.

With over $5 billion in sales in 2019, fish oil supplements are a staple in the vitamin aisle at your local health food store. Fish oil supplements are popular among people who want to add Omega-3 fatty acids to their diet without eating fish.