Table 3 Definition of DRP classification

P1

Adverse reactions

Patient suffers from an adverse drug event

P2

Drug choice problem

Patient gets or is going to get an incorrect (or no drug) drug for disease or condition

P3

Dosing problem

Patient gets more or less than the amount of drug he or she requires

P4

Drug use problem

1) Incorrect drug taken by patient

2) No drug taken/administered for at least one dose of total daily dose

P5

Interactions

There is a manifest or potential drug-drug or drug-food or drug-disease interaction