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know In the people's In the people's pharmacy health headlines, caffeine may be okay even for people with heart failure.

For years, cardiologists have warned their heart patients to avoid caffeine.

That's because they worried that caffeine would trigger irregular heart rhythms.

A new randomized placebo-controlled study has found that this is unlikely. The researchers

included 51 patients with chronic heart failure and gave them five doses of caffeine or placebo

over the course of five hours. This resulted in a total dose of 500 milligrams of caffeine, or zero milligrams of caffeine

for those who got the placebo.

After a week of washout, the exercise was repeated.

Patients who had gotten placebo were giving caffeine and vice versa.

During both sessions, patients had continuous

electrocardiographic monitoring. There were no significant differences between the groups

with respect to any type of arrhythmia. The exercise stress tests also revealed no differences.

Based on these results, the investigators conclude, to date, there's no solid evidence to support the common recommendation to limit moderate caffeine consumption in patients at risk for arrhythmias.

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