The role of glutamyl is to improve and quickly restore immune function, because human immune function will drop instantly after high-intensity strength training. Mix one or more glutamyl components with advanced muscle-building powder to cooperate with other components and improve recovery after training. I only eat glutamyl, so first ask myself if I have such deep medical knowledge. Anyway, I don't have it, so I don't know what side effects it has. I only know that bodybuilders only use supplements to make finished products.