There is nothing wrong with mixing protein, creatine, glutamine, etc. together in the same drink. I do this personally
all the time and have it after my workouts.
For the most part vanilla flavoured protein powder works the best with fruit flavoured creatine mixes such as the
Nutrex Vitargo CGL.
Both glutamine and creatine are amino acids, meaning they both are building blocks of protein. According to the University of Maryland Medical Center, glutamine is the most abundant amino acid found in protein. Creatine and glutamine are produced by your body, but they are also available as nutritional supplements and used to promote muscle growth and recovery. Before trying either supplement, consult your doctor to be sure it’s right for you.
It’s not only safe to consume creatine and glutamine at the same time, but It’s the ideal post-workout drink that combines the benefits of creatine and glutamine, including muscle recovery and restoring your body’s energy stores. UMM does not list any possible adverse reactions when mixing creatine and glutamine. Consult your doctor, however, before trying either supplement because of possible reactions with other medications.