Fish oil supplements are rich in Omega – 3 fatty acids. Omega – 3 fatty acids from fish oil are rich in two sub-nutrietns EPA and DHA. EPA stands for eicosapentaenoic acid while DHA stands for docosahexaenoic acid. Researches have proved that EPA and DHA may provide protection against chronic ailments.

Fish oil has become an important part of health diet since the last two decades of twentieth century. But purity and potency of the oil were vital issues which needed to be addresses through continued research. Health grade and pharmaceutical grade fish oil are the products of such research.

One major concern with fish oil is the fear of contamination due to the presence of dioxins, polychlorinated biphenyls (PCBs) and heavy metals, especially mercury. In recent years, purification methods especially molecular distillation has become quite advanced. Thanks to the distillation procedure adopted by many companies, the fears of such contaminants have been allayed.

Fish oil is derived from the bodies of certain oily fishes such as wild salmon, herring, mackerel, anchovies and sardines. The raw fish oil is scientifically purified and processed to turn it into a supplement. Pharmaceutical grade fish oil means fish oil of superior quality and exceptional purity. So much so that it takes 100 gallons of health-food grade fish oil to make one gallon of pharmaceutical fish oil. This is one of the reasons why pharmaceutical grade fish oil is so much more expensive than health-food grade fish oil. However, pharmaceutical fish oil implies high potency and low oxidation levels. However, Sealogix fish oil is high on quality but less expensive. Thus if you wish to have the best benefits from fish oil, it is advised to rely solely on pharmaceutical grade only.