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Drug interactions

Clomipramine + Ethinyl estradiol-levonorgestrel

Severity: Minor

Clomipramine and Ethinyl estradiol-levonorgestrel: 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

Ethinyl estradiol may modestly raise clomipramine exposure, which could increase anticholinergic effects, sedation and seizure risk. The effect is generally small and variable between patients.

What this interaction means in plain words

Clomipramine and Ethinyl estradiol-levonorgestrel have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Clomipramine belongs to Central Nervous System; Ethinyl estradiol-levonorgestrel belongs to Endocrine.

Evidence level: Low

Why it happens

Ethinyl estradiol may weakly inhibit CYP1A2 and other oxidative pathways involved in clomipramine metabolism.

What to do

Monitor for tricyclic adverse effects when the contraceptive is started and adjust the clomipramine dose if symptoms of excess 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Clomipramine with Ethinyl estradiol-levonorgestrel?

MediHelp rates the interaction as minor. Clomipramine and Ethinyl estradiol-levonorgestrel have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ethinyl estradiol may modestly raise clomipramine exposure, which could increase anticholinergic effects, sedation and seizure risk. The effect is generally small and variable between patients.

How serious is the interaction between Clomipramine and Ethinyl estradiol-levonorgestrel?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for tricyclic adverse effects when the contraceptive is started and adjust the clomipramine dose if symptoms of excess occur.

What other medicines interact with Ethinyl estradiol-levonorgestrel?

MediHelp also lists interactions of Ethinyl estradiol-levonorgestrel with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir and dasabuvir, Tranexamic acid. The full list is on the Ethinyl estradiol-levonorgestrel page.

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