Published: November 2009

Drowsiness - remember to warn patients

Prescriber Update 30(4): 25
November 2009

A recent CARM case report has highlighted the importance of patient counselling when prescribing or dispensing medicines that can cause drowsiness.

The case report describes adverse events including vertigo, dizziness and sleepiness following the use of 1.5 grams of ornidazole. The patient was not aware that this medicine could cause drowsiness and fell asleep, leading to a small child being inadequately cared for.

Healthcare professionals are reminded to consider if a medicine being prescribed or dispensed may cause drowsiness and to discuss this possibility with the patient.

Further information on known adverse reactions for medicines can be found in product data sheets at: