Acalabrutinib and Cimetidine interaction
Acalabrutinib and Cimetidine: the Acalabrutinib 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 Acalabrutinib (CALQUENCE) label · effective 2026-02-19
• CYP3A Inhibitors: Avoid co-administration with strong CYP3A inhibitors.
• Gastric Acid Reducing Agents: Avoid co-administration with proton pump inhibitors (PPIs).
Prevention or Management • Avoid co-administration of strong CYP3A inhibitors with CALQUENCE.
Effect of Other Drugs on CALQUENCE Strong CYP3A Inhibitors Clinical Effect • Co-administration of CALQUENCE with a strong CYP3A inhibitor (itraconazole) increased acalabrutinib plasma concentrations [see Clinical Pharmacology (12.3) ] .
Moderate CYP3A Inhibitors Clinical Effect • Co-administration of CALQUENCE with a moderate CYP3A inhibitor may increase acalabrutinib plasma concentrations [see Clinical Pharmacology (12.3) ].
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.