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Drug interactions

Cyclosporine + Ethinyl estradiol-norgestimate

Severity: Moderate

Cyclosporine and Ethinyl estradiol-norgestimate: moderate 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

Oral contraceptive estrogens have been reported to raise cyclosporine concentrations in some patients, which may increase the risk of nephrotoxicity and other adverse effects. The effect varies between individuals.

What this interaction means in plain words

Cyclosporine and Ethinyl estradiol-norgestimate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Evidence level: Low

Why it happens

Probable reduced CYP3A4-mediated cyclosporine metabolism by ethinyl estradiol, though the mechanism is not firmly established.

What to do

Monitor cyclosporine trough concentrations and renal function when starting or stopping the contraceptive, and adjust the cyclosporine dose accordingly.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

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 Cyclosporine with Ethinyl estradiol-norgestimate?

MediHelp rates the interaction as moderate. Cyclosporine and Ethinyl estradiol-norgestimate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Oral contraceptive estrogens have been reported to raise cyclosporine concentrations in some patients, which may increase the risk of nephrotoxicity and other adverse effects. The effect varies between individuals.

How serious is the interaction between Cyclosporine and Ethinyl estradiol-norgestimate?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor cyclosporine trough concentrations and renal function when starting or stopping the contraceptive, and adjust the cyclosporine dose accordingly.

What other medicines interact with Ethinyl estradiol-norgestimate?

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

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