bacterial infection
"I was taking this for a tonsil infection that neither amoxicillin or erythromycin could take care of. It worked like a charm, and is the first antibiotic I have taken that didn't have any side effects at all.
My vision also became better, so now I don't have to use glasses anymore.

Penicillin make me tired. Erythromycin wrecked med totally in ways I couldn't imagine, it even made my asthma I didn't knew I had, a 100 times worse, permanently!
Azithromycin (the 2 chlamydia/gonnorhea pills) made me tired and gave me a day of extreme diarrhea.

Clindamycin (Called "Dalacin") Is the first one that just works without ANY side-effects at all. And it also it made my vision go from poor to HD, so I haven't used glasses ever since."