I have been especially glutamine from Body Attack GL-100 Glutamine used. With regular weight training and a lot of time on the bike, the muscles have been Swallowed often felt despite protein diet. Here was recorded with glutamine offer real benefits and unique strength and endurance increase. Miracle does not work well glutamine, the bottom line is, and remains, to come to the performance limits in the sport activity. Where I have not experienced, I could live happily without glutamine ... But when it comes in endurance sports or weight training to the limit, glutamine is for me a real gain! Glutamine brings unlike BCAA's no direct gain in strength or endurance with me, but acts in the regeneration phase (although) not perform miracles, but noticeable differences! I experience myself significantly more powerful and less Swallowed with glutamine. Here I prefer glutamine in conjunction with Whey protein products. Every morning when I climb on bike is a protein shake with whey protein powder in conjunction with glutamine previously much more pleasant for the rest of the day! And after weight training is Whey Protein Powder with glutamine also mixed significantly Performance-boosting. Glutamine from Body Attack is basically ok, but tends to lump. And here the glutamine by Fox Fit Express is very pleasant. It clumps and not can be resolved well! In direct comparison with the previous powder it is more pleasant in combination with Whey Protein Powder and priced at about 24 / kg significantly cheaper than the body attack with about 30 / kg. The taste is absolutely in the green zone for glutamine. Glutamine is not a panacea! But it really helps in the regeneration by muscular contractions at the power limit! I appreciate it and am very pleased with the regenerative support that I find very pleasant! I stay after some experimenting but with the combination of Whey Protein Powder and glutamine, the person most closely gives me the power supply, I wish! this powder from me five stars!