Aah, my doctor spelled it for me over the phone. . . missed a couple of letters, I see. Wow, I don't want to take that drug if I don't have to. I just read about it online and I see there are terrible side effects, including a type of cancer. Apparently it is used for killing leukemia cancer cells . . . it's pretty heavy duty. I can only hope this doc will prescribe the VSL#3 and leave it at that. Thanks so much for the input. Sally