Concomitant Use of Quinolones and Stimulants and the Risk of Adverse Cardiovascular Symptoms: A Retrospective Cohort Study.

Concomitant use of stimulants and quinolone was associated with an increased hazard of cardiac symptoms in comparison to concomitant use of stimulants and amoxicillin or azithromycin, but there was no apparent difference in cardiac arrhythmias.