AllinKnots: I forgot to say that the reason Lactobillus GG, which is new, is supposed to be superior to other probiotics when taking antibotics is that it has been scientifically formulated to withstand the major disruption of the gut caused by antibiotics and to stay in the system up to seven days! Boy, do I ever wish I'd been so smart when I took mine. At that point, I took the advice of the druggist and took nothing, as he'd said that the antibiotic'll only flush out the acidophilus as soon as it hits your stomach. If he's wrong, I got a major bone to pick with him. Anyway, you can get it under its brand name, Culturelle, at Long's Drugs for about $12-16. They advise the 20 billion kind, not 10 billion, or else double up. Your druggist can probably have it within a day or so. Or order direct from Culturelle, but THEY charge about $29! Their number: 888-828-4242[[This message has been edited by Persistance (edited 07-14-1999).]