Hi everyone, I love Earthclinic and am very thankful to everyone who makes this site available. My feedback is on GABA. I have taken it in the past and it did NOT work for me. I believe that, as with everything, different things work for different people, so it may be worth trying it. The one I took was of a very reputable brand and the purpose of my taking it was to make me calmer and help me concentrate while I was studying for an exam.