Melrose Fish Oil + Vitamin D (Joint & Bone)Vitamin D Supports Bone Strength And Joint Health Good Source Of Essential Omega 3 Fatty Acids Helps Support Eyesight And Vision The fish used in the production of our oils are caught by purse seiners, which have no impact on the seabed. Melrose Omega Fish Oil + Vitamin D is a good source of essential omega 3 fatty acids EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), which cannot be produced by the body and must be obtained through diet.