Vitamin drinks are beverages made with added vitamins, which may include nutrients such as vitamin C or B vitamins. Their ingredients and nutritional content vary: some are water-based, while others use juice or sweeteners, and the amount of each vitamin depends on the product. They are distinct from sports drinks, which are generally formulated to replace fluids and electrolytes, and from energy drinks, which may contain caffeine or other stimulants. A drink's label is the best guide to its ingredients and vitamin amounts.