Protein powder can be regarded as protein. Glutamine and branched chain are amino acids that people can get from normal diet, so they are not in conflict with drugs.

But you basically don't have a chance to take these things at the same time. Take protein powder in the morning, before and after training and before going to bed. Glutamine is taken before and after training, and branched-chain amino acids are taken before and after morning exercise. . Drugs are usually taken 30 minutes after meals. They are totally out of place together.