Which diuretic is commonly associated with erectile dysfunction as a side effect?

• A. Hyponatremia
• B. Erectile dysfunction
• C. Hypokalemia
• D. Hyperglycemia

Answer: (B)

Diuretics can cause a range of adverse effects, and changes in sexual function are among the potential ones clinicians consider. Erectile dysfunction is a recognized side effect that can be associated with diuretic therapy because these drugs can lower blood pressure and alter electrolyte balance, which may impact penile blood flow and the nervous system signals involved in achieving an erection.

The other options describe metabolic disturbances that diuretics can cause—like hyponatremia, hypokalemia, or hyperglycemia—but they do not directly address the sexual side effect highlighted in the question. Therefore, erectile dysfunction is the most appropriate choice when linking a diuretic–related side effect to sexual function.