Protein powder is a dietary supplement that is commonly used by athletes, fitness enthusiasts, and people who want to increase their protein intake. It is typically made from whey, casein, soy, pea, or other plant-based sources of protein, and comes in various flavors and forms, including powders, bars, and ready-to-drink shakes.

The idea behind protein powder is that it provides a convenient and efficient way to increase protein intake, which is important for muscle growth, recovery, and repair. Protein is essential for building and repairing muscles, as well as for supporting a healthy immune system, hormone production, and other bodily functions.

Protein powders can be a convenient and effective way to supplement protein intake, particularly for people who have difficulty getting enough protein through their diet alone.