Our highly soluble Custom Vitamin/Mineral Base Powder contains all the required vitamin and minerals in balanced amounts and in their most bioavailable forms. Along with the active vitamin forms riboflavin 5 phosphate, pyridoxal 5 phosphate, 5-methylfolate, and methylcobalamin, our powder contains chelated mineral glycinates of magnesium, zinc, copper, manganese, and molybdenum. Chromium niacinate (polynicotinate) and L-selenomethionine are superior forms of these minerals, and calcium is provided as fully-reacted citrate with a very fine particle size for less grittiness.