Calcium acetate and Doxycycline interaction
Calcium acetate and Doxycycline: the Calcium acetate 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 Calcium acetate label · effective 2026-05-28
Calcium acetate capsules may decrease the bioavailability of tetracyclines or fluoroquinolones via this mechanism.
Calcium acetate capsules may decrease the bioavailability of tetracyclines or fluoroquinolones.
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.