The quintessential feature in the top 10 fastest ways to gain weight and build muscle mass is the supplements as well as the muscle gain enhancing products that are specific, as there are many products, but two of the vitamin supplements play a vital role, and these are Antioxidants and Multi-Vitamins. If you plan to build muscle mass, you should make it a point to consume minerals, vitamins and trace elements that match the desired levels pertaining to the needs of your body. The diet that you plan to adopt should get supplemented with minerals and vitamins.