Drug interactions
Deferasirox + Tamoxifen
Severity: Minor
Deferasirox and Tamoxifen: minor 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
Deferasirox can induce CYP3A4 in some patients, which may reduce tamoxifen exposure. The clinical significance is uncertain because tamoxifen activation relies largely on CYP2D6 as well as CYP3A4.
What this interaction means in plain words
Deferasirox and Tamoxifen have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Deferasirox belongs to Miscellaneous; Tamoxifen belongs to Endocrine.
Why it happens
Deferasirox may modestly alter CYP3A4 activity, changing tamoxifen metabolism; the direction and extent are not firmly established.
What to do
No empirical dose change; monitor clinical response to endocrine therapy.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Deferasirox and Tamoxifen, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Tamoxifen
- Amiodarone + Tamoxifen Major
- Anastrozole + Tamoxifen Major
- Bupropion + Tamoxifen Major
- Carbamazepine + Tamoxifen Major
- Cinacalcet + Tamoxifen Major
- Dacomitinib + Tamoxifen Major
Other interactions of Deferasirox
Frequently asked questions
Can I take Deferasirox with Tamoxifen?
MediHelp rates the interaction as minor. Deferasirox and Tamoxifen have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Deferasirox can induce CYP3A4 in some patients, which may reduce tamoxifen exposure. The clinical significance is uncertain because tamoxifen activation relies largely on CYP2D6 as well as CYP3A4.
How serious is the interaction between Deferasirox and Tamoxifen?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No empirical dose change; monitor clinical response to endocrine therapy.
What other medicines interact with Tamoxifen?
MediHelp also lists interactions of Tamoxifen with, for example, Amiodarone, Anastrozole, Bupropion. The full list is on the Tamoxifen page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
