”Ready, next!” Old Mrs A enters. She is slightly demented, does not sleep very well, and has a failing heart, but insists on living on her own. Her medical conditions have so far been reasonably managed, and her daughter comes by every day to check that she has taken all her medicines. Mrs A now complains about a dry cough and not being able to sleep and some dizziness on arising The symptoms started after the latest change of drug regimen, since a cardiologist had stopped her digoxin thinking that it might be contributing to, or causing, her dementia. She was now taking candesartan.