A study in the Annals of Internal Medicine looked at the association between cardiovascular outcomes and the coprescription of nitrates with PDE5 inhibitors in more than 42,000 men over a 10-year period. Two composite outcomes were measured: 1) cardiac arrest, shock, myocardial infarction, ischemic stroke, or acute coronary arteriography; and 2) syncope, angina pectoris, or drug-related adverse event. The authors found no statistically significant increase in measured cardiovascular AEs.