Vitamins are essential nutrients that the body requires in small amounts to support normal growth, development, and overall functioning. They occur naturally in a wide variety of foods, including fruits, vegetables, grains, dairy products, and proteins. Since the body cannot produce sufficient amounts of many vitamins on its own, they must be obtained through diet or supplementation.

There are different types of vitamins, each serving unique functions within the body. Vitamins are generally classified as either fat-soluble or water-soluble, depending on how they are absorbed and stored. They play important roles in processes such as energy metabolism, cell function, and maintaining overall nutritional balance.

In addition to natural food sources, vitamins are widely available in supplement forms such as tablets, capsules, gummies, powders, and liquids. Their convenience and broad availability have made them a common part of modern nutrition and wellness routines around the world.