Mr Crerar said the circumstances of her death caused him "sufficient concern" to have them drawn to public attention.
He urged those taking medication to take it strictly as directed by the prescribing doctor.
"The dosage and the timing must be strictly complied with. Warnings given about mixing medication should be heeded.
"Those taking prescription drugs must recognise the combined effects of drugs, and the combined effects of the drugs plus alcohol, and limit their consumption of alcohol."
Mr Crerar recommended the Ministry of Health consider an enhancement to existing publicity programmes to draw public attention to the dangers of taking prescribed drugs in quantities which exceed prescription dosages, and of mixing prescribed drugs which have a central nervous system depressant effect, with alcohol.