One, I do take an enzyme to help me break down food. It's called Similase. Both acidophilus (sp?) and lactaid don't work for me at all. I've tried. Two, even if yogurt doesn't have lactose in it, it doesn't change the fact that it gives me very painful gas. Three, my mother won't take me to get soy yogurt. Four, I would have asked the pharmacist for a substitute, had I been the one picking up my medication. Unfortunately, my mother didn't realize the problem when the pharmacist was explaining the "eat some yogurt to help with diarrhea side effects" part. Five, whoever said to get a different pill is obviously not good in this area. Most antibiotics can cause diarrhea and the only way to get rid of the strep bacteria is to take antibiotics. So really, I don't have much choice about the pill. Just some clarifications. Thanks. :)