When taking Zithromax, what should you avoid?

When you're on this antibiotic, a key thing to avoid is taking certain antacids – specifically those loaded with aluminum or magnesium – too close to your Zithromax dose, because they can stop your body from absorbing the antibiotic properly. Give it a couple of hours gap if you need antacids. Also, it's really crucial to make sure your doctor and pharmacist know about all other medications you're taking, including over-the-counter stuff and supplements. Zithromax can interact with a surprising number of other drugs, like some blood thinners (e.g., warfarin), certain heart rhythm medications, and others, potentially causing problems. And, of course, if you've ever had an allergic reaction to azithromycin or similar antibiotics (macrolides), that's an absolute "avoid."