ACE and Cholecystitis: Using CCB as the referent group, the risk of hospital admission for cholecystitis was not significantly different for patients on ACE inhibitors (adjusted OR 0.94, 95% CI 0.75 to 1.17), ARBs (adjusted OR 0.91, 95% CI 0.69 to 1.19), BBs (adjusted OR 1.10, 95% CI 0.84 to 1.40), or thiazides (adjusted OR 0.80, 95% CI 0.63 to 1.02).