In clinical practice, patients with anorexia nervosa (AN), their carers and clinicians often disagree about psychopharmacological treatment. We developed two corresponding questionnaires to survey the perspectives of patients with AN and their carers on psychopharmacological treatment. These questionnaires were distributed to 36 patients and 37 carers as a quality improvement project on a specialist unit for eating disorders at the South London and Maudsley NHS Foundation Trust. Although most patients did not believe that medication could help with AN, the majority thought that medication for AN should help with anxiety (61.1%), concentration (52.8%), sleep problems (52.8%) and anorexic thoughts (55.6%). Most of the carers shared the view that drug treatment for AN should help with anxiety (54%) and anorexic thoughts (64.8%). Most patients had concerns about potential weight gain, increased appetite, changes in body shape and metabolism during psychopharmacological treatment. By contrast, the majority of carers were not concerned about these specific side effects. Some of the concerns expressed by the patients seem to be AN-related. However, their desire for help with anxiety and anorexic thoughts, which is shared by their carers, should be taken seriously by clinicians when choosing a medication or planning psychopharmacological studies.