29th February 2024

A 85-year-old male has presented to his GP complaining of enlarged breasts, which is causing him much embarrassment.

A 85-year-old male has presented to his GP complaining of enlarged breasts, which is causing him much embarrassment. On examination, there is bilateral gynaecomastia with no palpable masses or lymphadenopathy. He has a past medical history consisting of heart failure, benign prostatic hyperplasia and constipation.

Which of the following drugs is most likely to be causing his symptoms?