Omega-3 fatty acids are polyunsaturated fats naturally found in certain foods such as fatty 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. As a result, fewer softgels are needed to achieve the same amount.

EPA stands for eicosapentaenoic acid and DHA for docosahexaenoic acid. They are two forms of omega-3 fatty acids commonly found together in fish oil. They are added in different proportions to supplements.

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

Omega-3, -6, and -9 are three types of unsaturated fatty acids that differ in structure and source: Omega-3 fatty acids are mainly found in fatty 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.

rTG stands for ‘re-esterified triglycerides’, a form of omega-3 fatty acids in which the fatty acids are bound as they naturally occur in foods. This form is often used in concentrated supplements.