1. Introduction: What is Azithromycin DT? Its Role in Modern Medicine So you’re looking into Azithromycin DT. Let me tell you what I’ve learned over fifteen years of prescribing this stuff—and I mean really learned, the kind of knowledge that comes from watching patients get better when nothing else worked, and occasionally dealing with the weird side effects that the textbooks don’t always emphasize. Azithromycin DT (dispersible tablet) belongs to the azalide subclass of macrolide antibiotics.