Should clopidogrel replace aspirin as the standard for CAD prevention?

A large meta-analysis in The Lancet found clopidogrel superior to aspirin for long-term secondary prevention in coronary artery disease, reducing major cardiovascular events by 14% without added bleeding risk. The REBOOT trial in NEJM showed no benefit of beta-blockers in post-MI patients with preserved ejection fraction, and even potential harm in women on high doses, prompting reevaluation of routine use. Finally, a phase 2 trial in JAMA Internal Medicine showed daily azelastine nasal spray reduced COVID-19 incidence by 67% and shortened illness duration, though larger studies are needed to confirm its prophylactic role.