Review on 💪 Optimize Muscle Mass, Strength & Post-Workout Recovery with Doctor's Best Pure L-Glutamine Powder, an Amino Acid Supplement - 300g by Tim Lefebvre

While L-Glutamine can be very beneficial for most people, there are some that may not. I learned (the hard way) that I shouldn't take L-glutamine because I'm GABA deficient. Glutamine is converted in the body to glutamate, which is an excitatory neurotransmitter. Excess glutamate has to be converted to GABA by the body (and can be converted back to glutamine if needed), but this can be broken down or compromised due to: genetics, disease, malnutrition, etc. I suffer from migraines and take supplements. Glutamine leads to more frequent attacks, greater intensity and longer duration. (Think MSG headaches for those of you who are prone to them.) So while Dr's Best is a great brand, use caution and see if this supplement is right for you. Work with your doctor and/or nutritionist.