Lamberts AZ Multi Vitamins is a one-tablet daily formula that provides almost all essential micronutrients, many of which are at 100% of the RDA. It is a dietary supplement that provides levels of micronutrients aimed at their maintenance and is recommended for ages 13 and over, while the fact that AZ provides levels of micronutrients similar to corresponding multivitamin formulas on the market, has a significantly lower purchase cost. To ensure the correct levels of the 2 vital bone nutrients calcium and magnesium, doctors often recommend taking Osteoguard in parallel.