Headache or hypotension was prevalent among 0.7% of participants receiving ACE inhibitors, 7.9% of participants receiving DH CCBs or non–DH CCBs, 1.4% of participants receiving β-blockers, 10.8% of participants receiving ARBs, 7.4% of participants receiving diuretics, and 8.8% of participants receiving placebo. Here, ACE is linked to Headache.