Table 3.

High risk drugs for developing DDIs

Pre intervention			Post intervention
Drugs	Number	Percentage	Drugs	Number	Percentage
Furosemide	118	9.40	Furosemide	95	11.23
Aspirin	112	9.00	Aspirin	91	10.76
Enalapril	64	5.14	Phenytoin	67	7.92
Theophylline	58	4.66	Enalapril	49	5.79
Rifampicin	56	4.50	Theophylline	41	4.85
Digoxin	53	4.26	Rifampicin	30	3.55
Warfarin *	51	4.10	Digoxin	26	3.07
Atenolol	45	3.62	Ciprofloxacin	23	2.72
Phenytoin **	45	3.62	Prednisolone	21	2.48
Amlodipine	41	3.30	Clopidogrel	20	2.36
Ranitidine	36	2.89	Amiloride	19	2.25
Isoniazid	33	2.65	Ramipril	19	2.25
Omeprazole	26	2.09	Atenolol	18	2.13
Gentamicin	26	2.09	Metformin	18	2.13
Metformin	25	2.01	Gentamicin	18	2.13

^*Significant (chi-square= 18.26, p< 0.01) decrease in the incidence after intervention.

^**Significant (chi-square = 18.38, p< 0.01) decrease in the incidence after intervention.