Drug interactions
Conjugated estrogens vaginal + Diltiazem
Severity: Minor
Conjugated estrogens vaginal and Diltiazem: 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
Systemic exposure to vaginal estrogen is low, and any increase from diltiazem is likely to have little clinical effect.
What this interaction means in plain words
Conjugated estrogens vaginal and Diltiazem 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
Theoretical reduction of estrogen CYP3A4 metabolism by diltiazem, with limited systemic absorption of vaginal products.
What to do
No action is generally required. Evaluate for estrogenic adverse effects such as breast tenderness or bleeding if symptoms 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 Conjugated estrogens vaginal with Diltiazem?
MediHelp rates the interaction as minor. Conjugated estrogens vaginal and Diltiazem have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Systemic exposure to vaginal estrogen is low, and any increase from diltiazem is likely to have little clinical effect.
How serious is the interaction between Conjugated estrogens vaginal and Diltiazem?
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 action is generally required. Evaluate for estrogenic adverse effects such as breast tenderness or bleeding if symptoms 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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