Believed to support numerous bodily functions, including joint health, heart health and circulation. Cod Liver Oil contains the fatty acids eicosapentaenopic acid 80mg (EPA) and docosahexaenoic acid 90mg (DHA) which are thought to work together in the body to maintain joints, heart health and circulation. The main difference from Omega 3 fish oils is that Cod Liver Oil also provides a rich natural source of Vitamins A and D which, whilst a best seller all year round, means Cod Liver Oil is particularly popular in the winter months when there is a lack of natural sunshine.