Protein powder is suitable for people with insufficient supplement in protein, because eating protein helps to increase muscle. If you don't get enough protein in your diet, you should eat it.
Protein powder and muscle-building powder are very different for people. Thin people must use muscle-building powder and supplement protein powder at the same time, and the effect is better. However, obese people (high fat and low metabolism) can only eat protein powder, and eating muscle-building powder will make them fatter. Therefore, it is not a generalization, but should be chosen according to personal physical conditions.
Eat at least four spoonfuls of muscle-building powder every day. You can eat them separately or at one time. The supplementary effect before and after training is better,