A protein supplement is a product designed to provide additional protein to the diet, often used by athletes, bodybuilders, or individuals looking to increase their protein intake. These supplements come in various forms, including powders, bars, and ready-to-drink shakes, and can be made from sources like whey, casein, soy, or pea protein. Protein is essential for building and repairing tissues, making it important for muscle recovery and growth. Many people use protein supplements to help meet their daily protein needs, especially when whole food sources are insufficient or impractical.