Perindopril: do randomised, controlled trials support an ACE inhibitor class effect? A meta-analysis of clinical trials.

Due to the lack of face-to-face trials between ACE inhibitors, clinicians and third-party funders may assume they provide similar outcomes. As a result, ACE inhibitors may be prescribed interchangeably and deemed to provide the same outcomes for all patients when used chronically, that is for more than six months.