Drug interactions
Belzutifan + Drospirenone
Severity: Major
Belzutifan and Drospirenone: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Belzutifan may lower drospirenone exposure and cause contraceptive failure or breakthrough bleeding. Belzutifan can cause fetal harm, so loss of contraceptive efficacy is clinically important.
What this interaction means in plain words
Belzutifan and Drospirenone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Belzutifan belongs to Miscellaneous; Drospirenone belongs to Endocrine.
Why it happens
Belzutifan induces CYP3A4, increasing drospirenone metabolism.
What to do
Use an effective non-hormonal contraceptive method during belzutifan treatment and for the period recommended in labeling afterwards.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Drospirenone
Other interactions of Belzutifan
Frequently asked questions
Can I take Belzutifan with Drospirenone?
MediHelp rates the interaction as major. Belzutifan and Drospirenone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Belzutifan may lower drospirenone exposure and cause contraceptive failure or breakthrough bleeding. Belzutifan can cause fetal harm, so loss of contraceptive efficacy is clinically important.
How serious is the interaction between Belzutifan and Drospirenone?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use an effective non-hormonal contraceptive method during belzutifan treatment and for the period recommended in labeling afterwards.
What other medicines interact with Drospirenone?
MediHelp also lists interactions of Drospirenone with, for example, Bosentan, Carbamazepine, Eplerenone. The full list is on the Drospirenone page.
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