Antacids (Tums, Maalox, Mylanta) and Quinine interaction
Antacids (Tums, Maalox, Mylanta) and Quinine: the Quinine prescribing label flags this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Quinine (QUININE SULFATE) label · effective 2025-10-31
Concomitant administration of these antacids with quinine sulfate should be avoided.
Antacids Antacids containing aluminum and/or magnesium may delay or decrease absorption of quinine.
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.