Aspirin: Morning or bedtime?

aspirinAspirin is a common treatment for patients who are at a high risk for heart attacks or strokes; it works by thinning the blood and preventing clotting. But is there a difference between taking it in the morning or at bedtime? According to a recent study, yes.

The study, presented at the American Heart Association’s (AHA’s) annual meeting, found that taking aspirin at bedtime reduced platelet activity more than in the morning, because it reduced the body’s normal morning surge in platelet activity. Patients who took the daily aspirin dosage at bedtime didn’t experience more side effects than those who took it in the morning.

Because the study was small, and it did not examine whether a bedtime dosage would provide better protection against heart attacks or strokes, further research is needed. Until then, the AHA recommends that, if you take prescribed aspirin for heart problems, you should continue to take it whatever time of day you prefer.