Muscle health & energy (Boost High Protein Drink contains 20 g protein for muscle health and 250 nutrient-rich calories with B-vitamins to help convert food to energy). Immune support. Discover key nutrients found in Boost nutritional drinks to help support the immune system. Key nutrients for Immune Support: Vitamins C & D; Zinc, iron & selenium. Vitamins; Proteins; Minerals. Boost Nutritional drinks help you get more out of life today and tomorrow with tailored nutrition to help meet your needs. Suitable for lactose intolerance. Balanced nutritional drink to help you be your best!