Marine algae oil comes from microalgae like Schizochytrium. It supplies long chain omega-3 fatty acids, mostly DHA. The oil gives you a plant based, vegan friendly alternative to fish oil. Many people find it skips the fishy aftertaste and reflux common with fish oil supplements.
DHA supports brain and eye health. The oil also helps maintain cardiovascular function, skin, and hair. Take it with a meal that contains some fat. Dietary fat boosts absorption of the fatty acids.
Most people tolerate marine algae oil easily. Digestive upset is uncommon. Large doses can thin the blood mildly. If you take anticoagulants such as warfarin or have a bleeding disorder, check with your healthcare provider before you start.