Drug reference
captopril
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.
Drug class
Cardiovascular (ACE Inhibitors)
Mechanism of action
Angiotensin converting enzyme (ACE) inhibitors dilate arteries and veins by competitively inhibiting the conversion of angiotensin I to angiotensin II (a potent endogenous vasoconstrictor) and by inhibiting bradykinin metabolism; these actions result in preload and afterload reductions on the heart
ACE inhibitors also promote sodium and water excretion by inhibiting angiotensin-II induced aldosterone secretion; elevation in potassium may also be observed
Common side effects
- Pruritus
- Hyperkalemia
- Hypotension
- Dysgeusia
- Skin rash
Boxed warnings
- Discontinue as soon as possible when pregnancy detected; affects renin-angiotensin system causing oligohydramnios, which may result in fetal injury and/or death
Contraindications
- Hypersensitivity to ACE inhibitors Anuria History of ACEI-induced angioedema Hereditary or idiopathic angioedema Coadministration of neprilysin inhibitors (eg, sacubitril) with ACE inhibitors may increase angioedema risk; do not administer ACE inhibitors within 36 hr of switching to or…
Known interactions (2)
- captopril + Glimepiride Moderate
- captopril + ibuprofen Moderate
Related conditions
Frequently asked questions
What drug class is captopril?
captopril belongs to: Cardiovascular.
How does captopril work?
Angiotensin converting enzyme (ACE) inhibitors dilate arteries and veins by competitively inhibiting the conversion of angiotensin I to angiotensin II (a potent endogenous vasoconstrictor) and by inhibiting bradykinin metabolism; these actions result in preload and afterload reductions on the heart ACE inhibitors also promote sodium and water excretion by inhibiting angiotensin-II induced aldosterone secretion; elevation in potassium may also be observed
What are the common side effects of captopril?
Pruritus, Hyperkalemia, Hypotension, Dysgeusia, Skin rash
Which drugs interact with captopril?
Glimepiride, ibuprofen
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