If you are looking for L-Glutamine powder you probably already know exactly what it is doing, and why you want to buy it. I've been using this particular brand for the past few months - about 5-15g each day (15g on training day, 5g on non-training). It mixes well with water (or juices) and its taste - by itself - is not bad (personally I drink it just with water - it's good enough for me, but you can try mix it with some juice or even add it to a protein drink). I didn't notice any difference between this type of L-Glutamine and other (much more expensive) products -> so I guess this brand is working just fine. There were no problems with the delivery, and I will be buying that again in the future.