Omega-3 fatty acids are polyunsaturated fatty acids that naturally occur in certain foods such as oily fish, algae, and seeds. In supplements, they are often added in the form of EPA and DHA.

An omega-3 concentrate contains a higher amount of omega-3 fatty acids per capsule than standard fish oil. Therefore fewer softgels are needed to achieve the same amount.

EPA stands for eicosapentaenoic acid and DHA for docosahexaenoic acid. These are two types of omega-3 fatty acids that are often found together in fish oil. They are added in different ratios to supplements.

Fatty acids are building blocks of fats that naturally occur in food. They are divided into saturated fatty acids, monounsaturated fatty acids (like omega-9), and polyunsaturated fatty acids (like omega-3 and omega-6). Each type of fatty acid has a unique chemical structure and is found in various foods.

Omega-3, -6, and -9 are three types of unsaturated fatty acids that differ in structure and origin: Omega-3 fatty acids are mainly found in oily fish, algae, and flaxseed. Well-known forms are EPA and DHA. Omega-6 fatty acids are found in sunflower oil, corn oil, and nuts, for example. Omega-9 fatty acids are monounsaturated fats commonly found in olive oil.