AZ Multi is formulated to ensure correct levels of all major nutrients, supplementing some at 100% of the RDA (Recommended Daily Allowance). It contains 31 nutrients that are generally necessary to supplement to compensate for muscle or intellectual wear, which makes our product possibly the most powerful on the market. Due to its composition, it is not necessary to also take a calcium and magnesium supplement, as is recommended in other brands. Usage: Take one tablet daily, preferably with food.