Drug interactions
Captopril + Ethinyl estradiol-drospirenone
Severity: Moderate
Captopril and Ethinyl estradiol-drospirenone: 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
Drospirenone has antimineralocorticoid activity and can raise serum potassium. Captopril, as an ACE inhibitor, also lowers aldosterone, so the combination can cause hyperkalemia, especially with renal impairment.
What this interaction means in plain words
Captopril and Ethinyl estradiol-drospirenone 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.
Captopril belongs to Cardiovascular; Ethinyl estradiol-drospirenone belongs to Endocrine.
Why it happens
Additive potassium retention through drospirenone aldosterone antagonism and ACE inhibition.
What to do
Check serum potassium in the first cycle and periodically thereafter. Choose a different contraceptive if renal impairment or other potassium-raising drugs are present.
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?
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Other interactions of Ethinyl estradiol-drospirenone
- Ethinyl estradiol-drospirenone + Fezolinetant Contraindicated
- Ethinyl estradiol-drospirenone + Ombitasvir / paritaprevir / ritonavir Contraindicated
- Ethinyl estradiol-drospirenone + Ombitasvir / paritaprevir / ritonavir and dasabuvir Contraindicated
- Ethinyl estradiol-drospirenone + Tranexamic acid Contraindicated
- Aminocaproic acid + Ethinyl estradiol-drospirenone Major
- Amobarbital + Ethinyl estradiol-drospirenone Major
Other interactions of Captopril
- Aliskiren + Captopril Contraindicated
- Captopril + Sacubitril / valsartan Contraindicated
- Captopril + Sacubitril-valsartan Contraindicated
- Amifostine + Captopril Major
- Amiloride + Captopril Major
- Amlodipine-hydrochlorothiazide-valsartan + Captopril Major
Frequently asked questions
Can I take Captopril with Ethinyl estradiol-drospirenone?
MediHelp rates the interaction as moderate. Captopril and Ethinyl estradiol-drospirenone 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. Drospirenone has antimineralocorticoid activity and can raise serum potassium. Captopril, as an ACE inhibitor, also lowers aldosterone, so the combination can cause hyperkalemia, especially with renal impairment.
How serious is the interaction between Captopril and Ethinyl estradiol-drospirenone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium in the first cycle and periodically thereafter. Choose a different contraceptive if renal impairment or other potassium-raising drugs are present.
What other medicines interact with Ethinyl estradiol-drospirenone?
MediHelp also lists interactions of Ethinyl estradiol-drospirenone with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir, Ombitasvir / paritaprevir / ritonavir and dasabuvir. The full list is on the Ethinyl estradiol-drospirenone page.
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