As mentioned, Vita JYM is strategically devoid of zinc and magnesium because you want to supplement those two minerals at a separate time from other minerals. Plus, you do not want to supplement with too much zinc or magnesium, which is counterproductive. Vita JYM also supplies you the proper amount of copper you need in relation to zinc, which needs to be taken at a specific ratio for best results.* Vita JYM is also devoid of calcium, which interferes with the absorption of numerous minerals. Pro JYM, my high-quality protein powder blend, provides you ample calcium (400 mg per serving).