Related Experiment Video
Updated: Jul 16, 2026

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
Published on: June 12, 2021
Hemolytic anemia: a rare but potentially serious adverse effect of captopril
Mark A Trimble1, Michael H Sketch, Rajendra H Mehta
1Duke University Medical Center, Durham, NC, USA.
Insights
Captopril, an ACE inhibitor, is widely used for heart failure. While generally safe, this paper highlights a rare but serious side effect: hemolytic anemia, distinct from common neutropenia.
Area of Science:
- Pharmacology
- Hematology
- Cardiology
Background:
- Captopril is a pioneering oral angiotensin-converting enzyme (ACE) inhibitor with extensive clinical use and study.
- Its efficacy in treating congestive heart failure (CHF) and general safety profile are well-established.
- Common hematologic adverse reactions include neutropenia and agranulocytosis.
Observation:
- This paper focuses on an uncommon hematologic adverse effect of captopril.
- The described side effect is potentially serious and distinct from more frequent hematologic reactions.
Findings:
- The study details the occurrence of hemolytic anemia associated with captopril use.
- Hemolytic anemia represents a rare but significant hematologic complication.
Implications:
- Clinicians should be aware of this uncommon side effect when prescribing captopril.
- Monitoring for hemolytic anemia may be warranted in patients experiencing unexplained anemia on captopril.
- This finding expands the known safety profile of ACE inhibitors.
Abstract:
Captopril was the first oral angiotensin-converting enzyme (ACE) inhibitor available and, as such, has been extensively studied and in clinical use for many years. Several studies have defined captopril's efficacy in the treatment of congestive heart failure (CHF) as well as determined its safety profile. The most common adverse hematologic reactions associated with captopril use include neutropenia and agranulocytosis. This paper describes an uncommon and a potentially serious hematologic side effect associated with captopril-hemolytic anemia.
Related Concept Videos
Hypersensitivity Reactions: Cytolytic Reactions
Hemodialysis II: Procedure and Complications
Drug toxicity: Idiosyncratic Reactions
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors
Cardiac Catheterization I: Pre-Procedure Overview