The answer

Martin should go to the GP, but for an assessment rather than to ask for a specific treatment. Given his otherwise recently improved health, there is a chance that the erectile dysfunction (ED) he is experiencing may be due to the losartan he has been prescribed. Many drugs that work on the cardiovascular system can cause ED, as they can affect blood flow to and through the penis.

The GP may decide to keep him on the antihypertensive as it seems to be doing the trick, and prescribe something for the ED – usually sildenafil, which is the generic name for Viagra – or try him on another blood pressure drug to see if they can get his hypertension under control but without the undesirable side effect he is experiencing.