Taking melatonin over a long period might be linked to a higher risk of developing heart failure. Studies show that people who take it regularly have about an 82% higher chance of getting heart failure compared to those who don't.

Taking melatonin long-term to help with sleep might actually raise the risk of being hospitalized for heart failure. Research suggests people who use it over a long period face about three times the risk of serious heart problems compared to those who don't take it.

Taking melatonin for sleep over a long period might slightly increase your chance of developing heart failure compared to not taking it. This small but noticeable increase in risk means doctors should keep an eye on heart health when prescribing it for insomnia.

Taking melatonin for sleep over a long period might be connected to a much higher chance of being hospitalized for heart failure compared to not taking it. The data shows that about 19% of long-term users ended up in the hospital for heart issues, compared to only 6.6% of those who didn't take it.

Taking melatonin for sleep over a long period might actually increase the risk of heart failure in adults who have insomnia. Instead of being completely safe for the heart, the claim suggests it could raise the chances of developing heart problems by nearly 2% over five years.

Taking melatonin supplements appears to help heart failure patients feel better and lower stress markers in their heart, but it doesn't reliably improve the heart's pumping strength.