The manufacturers of Physio Omega believe that DPA is the missing fish oil supplement that most people fail to acquire. However, with the use of Physio Omega, it is possible to cover up for this deficiency. As per PhysioTru, the best source of DPA is the Menhaden fish. This type of fish is said to have the highest amount of DPA in their bodies. The DPA present in Physio Omega is sourced from these fish which makes it a high-quality supplement.