Protein powder is essentially a concentrated source of dietary protein designed to help you meet your daily protein target more conveniently. Protein is used for muscle repair, enzyme and hormone production, immune proteins, and continuous tissue renewal. The main advantage of powder form is operational: it can fill protein gaps on busy days with a measurable serving size. However, protein powder is not a drug and it does not “build muscle” by itself. Outcomes depend on total daily protein intake, training stimulus (if any), overall calories, sleep, and consistency. Some people experience bloating or gas depending on the type (whey concentrate vs isolate, plant blends) and added ingredients (sweeteners, gums). Product quality and tolerability matter. If you have kidney or liver disease, or other chronic conditions, it is safer to discuss supplementation with a clinician before routine use.