Drug interactions
Diltiazem + Estrogens conjugated synthetic
Severity: Minor
Diltiazem and Estrogens conjugated synthetic: 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
Diltiazem may modestly raise estrogen exposure by inhibiting CYP3A4. Clinical effects are usually small and show as estrogenic adverse effects.
What this interaction means in plain words
Diltiazem and Estrogens conjugated synthetic have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
CYP3A4 inhibition by diltiazem may reduce estrogen metabolism.
What to do
No routine change is needed. Review for estrogenic effects such as breast tenderness and reduce the estrogen dose if they occur.
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?
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Other interactions of Diltiazem
- Diltiazem + Flibanserin Contraindicated
- Diltiazem + Ivabradine Contraindicated
- Diltiazem + Lomitapide Contraindicated
- Diltiazem + Lonafarnib Contraindicated
- Acebutolol + Diltiazem Major
- Alfentanil + Diltiazem Major
Frequently asked questions
Can I take Diltiazem with Estrogens conjugated synthetic?
MediHelp rates the interaction as minor. Diltiazem and Estrogens conjugated synthetic have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Diltiazem may modestly raise estrogen exposure by inhibiting CYP3A4. Clinical effects are usually small and show as estrogenic adverse effects.
How serious is the interaction between Diltiazem and Estrogens conjugated synthetic?
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 routine change is needed. Review for estrogenic effects such as breast tenderness and reduce the estrogen dose if they occur.
What other medicines interact with Diltiazem?
MediHelp also lists interactions of Diltiazem with, for example, Flibanserin, Ivabradine, Lomitapide. The full list is on the Diltiazem page.
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