I have heard you guys talk about these and I don't know what you really mean. I have had a pain in the lower left side of my back in the area of the kidney on and off since I woke up one day pissing blood on an m1t cycle. Well anyway this ache still comes back on and off. I have no idea what it is, I had a ct scan and the doctors said nothing was wrong with me. It got really bad doing squats and deadlifts but for some reason it is only on the left side of my lower back. I read about you guys taking taurine, and just purchased some the other day. Well I started taking it and now the ache has been gone since the second day...But last night my wife happend to hit me in the exact area where the ache was and it came back somewhat. I mean I felt a burning sensation in the area and sort of like a heating up of the area. Today I can still feel it somewhat but nothing like before I started the taurine, but that might be all in my head because of the hit to the area last night. I can't believe its gone though, I got the taurine I have now from rite aid, but I am gonna get some powder as soon as I can.