Some research has raised concerns about the safety of aspirin for heart failure patients. But a new study appears to offer reassurance.

The study of more than 2,300 patients found that those on daily aspirin were not at heightened risk of being hospitalized for, or dying from, heart failure.

That has been a particular concern because, in theory, aspirin could interfere with the benefits of certain heart failure drugs.

For the new study, researchers analyzed data from a clinical trial in which heart failure patients were randomly assigned to take either aspirin or warfarin, which is used to prevent blood clots.

Patients in the aspirin group took 325 mg per day.

Over 10 years, more than 19 percent of aspirin patients were hospitalized for heart failure, or died of the disease. That compared with just less than 23 percent of warfarin users.

The team also accounted for other factors including patients’ age and heart disease severity. In the end, there was no statistical difference between the two groups in their risk of heart failure complications.