Other RTD Beverages from manufacturer Gymbeam is a category containing the RTD - Ready-to-drink beverages that you can consume right away without the need to prepare the final product in any way. For example, these include beverages that contain a fat burner such as L-carnitine, as well as caffeine or collagen, which not only promotes healthy joints, cartilage, bones, tendons and ligaments, but also improves the quality of hair, nails and skin. Athletes will certainly appreciate selected beverages that will help them stay hydrated before, during and after exercise and supplement important vitamins and minerals.