The enteric coating helps ensure the capsule only dissolves further along in the digestive tract. This is often chosen by people who are sensitive to burping or a fishy taste after intake.

Fish oil is a fat-soluble substance. Taking it with a meal—preferably one that contains fat—helps absorption and is generally experienced as more pleasant, for example for digestion.

Fatty acids are building blocks of fats and can be divided into saturated, monounsaturated, and polyunsaturated fatty acids. In supplement form, it is often about polyunsaturated fatty acids, such as omega-3.

These names refer to the position of a double bond in the molecular structure of the fatty acid. Omega-3, omega-6, and omega-9 belong to different groups of unsaturated fatty acids, each with a unique chemical structure.

DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid) are both omega-3 fatty acids. DHA has a longer chain than EPA and is often mentioned separately due to its specific presence in this type of supplement.

These fatty acids naturally occur together in fish oil and are therefore often combined in a fixed ratio in supplements.