Table 5.

Rate of drug interactions in each drug category

Medication Category	Rate of interaction (%)	Medication with highest rate of interaction in each category (N)
Cardiovascular	186 (24.6)	Atorvastatin (63)
Antibiotics	135 (17.9)	Ciprofloxacin (36)
Respiratory system	130 (17.2)	Combivent (41)
Sedatives, hypnotics and narcotics	99 (13.1)	Methadone (25)
Gastrointestinal	89 (11.8)	Pantoprazole (57)
Vitamins and supplements	67 (8.9)	Calcium-D (34)
Immunosuppressants and corticosteroids	49 (6.5)	Prednisolone (17)