Antacids (Tums, Maalox, Mylanta) and Atazanavir interaction
Antacids (Tums, Maalox, Mylanta) and Atazanavir: the Atazanavir prescribing label describes an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Atazanavir (REYATAZ) label · effective 2024-12-05
Reduced plasma concentrations of atazanavir are expected if proton-pump inhibitors, antacids, buffered medications, or H 2 -receptor antagonists are administered with REYATAZ [see Dosage and Administration ( 2.3 , 2.4 , 2.5 and 2.6) ] .
Antacids and buffered medications: ↓ atazanavir REYATAZ should be administered 2 hours before or 1 hour after antacids and buffered medications.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.