Dutasteride and Itraconazole interaction
Dutasteride and Itraconazole: both prescribing labels describe 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 Itraconazole (Tolsura) label · effective 2025-04-23
Dutasteride Oxybutynin Sildenafil (for erectile dysfunction) Tadalafil (for erectile dysfunction and benign prostatic hyperplasia) Tolterodine Monitor for adverse reactions.
From the Dutasteride label · effective 2026-01-13
The effect of potent CYP3A4 inhibitors on dutasteride has not been studied.
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.