Table 1.

Examples of errors occurring in each prescribing component process

Prescription writing	Decision making
Wrong patient	Incorrect duration
Medication omitted	Medication omitted
Inappropriate abbreviation	Incorrect timing
Illegible	Incorrect frequency
Incomplete prescription	Incorrect route
Missing instructions for use	Incorrect dose
Omission of prescriber signature	Incorrect formulation
Incorrect drug	Medication prescribed without indication
	Contra-indication to medication
	Significant drug-drug interaction
	Duplication of therapy
	Patient allergic to drug prescribed