Before prescribing any drug, take care to avoid problems of interactions with other drugs by obtaining details of any other medication being taken by the patient, whether the medication is:

also prescribed at the same time

previously prescribed by another prescriber for the same or another condition and currently being taken by the patient

purchased or otherwise obtained by the patient for the purposes of self-medication at home

9.1 Note on interactions with alcohol

If a prescribed drug interacts with alcohol (eg. metronidazole, diazepam, anti-diabetic drugs, tricyclic antidepressants, etc.) caution the patient to avoid taking alcoholic drinks during the course of treatment and for 48 hours afterwards