Table 3.

Frequency of adverse drug reactions and WHO causality assessment.

Drugs	Adverse drug events	Total no of patients with adverse drug events/no. of patients receiving drugs	% Adverse drug events	Causality assessment
Angiotensin receptor blockers	Dizzziness (11)	35/121	28.92	Probable
	Angioedema (20)			Probable
	Nausea (7)			Possible
	Weakness (7)			Unlikely
Calcium channel blocker	Pedal oedema (2)	3/10	30	Probable
	Tremors (3)			Possible
Diuretic	Muscle cramps (2)	4/7	57.14	Unlikely
	Headache (2)			Probable