Clarithromycin link to increased risk of cardiac death

The research found clarithromycin was associated with a 76% higher risk of cardiac death compared with penicillin V.

The cohort study included 160,297 adults aged 40–74 years who received seven day courses of clarithromycin, 588,988 who had roxithromycin and 4,355,309 who had penicillin V.