sorry for not responding quicker been sick with the stupid stomach problems again, had blood in stool, now I have IBS plus porphyria, I don't think it is pct I think it is the other form of porphyria with all the stomach problems, just been putting up with it. My stomach pains are right in the middle below breast bone very painfull they are called spasms and they get real bad. But that medicine works real good or Bentyl works real good too I think that is how you spell it. My favorite for the pain is Hyoscyamine(kremers Urban) but one problem they make you real sleepy, most of my pain comes at 4:00 in the morning don't ask me why. I also have to load up on heart burn medicine have that real bad too nothing seems to help. Now when I had the stomach to the back pain I was told it was my galbladder and they removed it, my gastriologist seems to think they were wrong in removing it and it was the porphyria instead, oh well we will never no.