Melatonin and Heart Attacks: How High Is the Risk?

“Can melatonin harm your heart?” “Does melatonin increase the risk of heart attacks?” These headlines are becoming more frequent. You may have seen them too. This article puts the data into context and explains why one factor matters most: the difference between occasional and regular use.

Melatonin is now widely available in Germany and many other countries. You can find it in drugstores, pharmacies, and online. It is sold as sprays, capsules, and gummies, sometimes even marketed specifically for children.

This creates a strong sense of safety. If a product is so widely available, easy to access, and even used for children, it can’t really be harmful, right?

That conclusion feels intuitive. And that’s exactly where the problem begins.

Melatonin is not a typical dietary supplement. It is a hormone that regulates key processes in the body, especially the sleep-wake cycle, but also systems such as cardiovascular function, hormonal balance, immune response, and blood clotting.

Occasional vs daily use: a critical difference

One key point is often overlooked: the difference between occasional and regular use.

Melatonin can be useful in specific situations, such as jet lag or short-term sleep issues. In these cases, it is used in a targeted and time-limited way.

However, current headlines and risk signals mainly relate to regular, often daily use. And this is where the evaluation changes significantly.

Melatonin is a hormone, not a standard supplement

Melatonin regulates the circadian rhythm and also affects systems such as cardiovascular health, hormonal regulation, the immune system, and blood clotting.

This means that regular intake is not just supplementation, but repeated intervention in complex biological processes.

At ASPRIVA, we have already shown that melatonin’s actual impact on sleep is often smaller than expected.
→ Sleep problems? Why melatonin is not the solution

On average, people fall asleep only a few minutes faster. This puts the benefits into perspective, especially with long-term use.

What studies show about heart risk

The evidence is not conclusive but shows a recurring pattern.

Short-term studies usually report no serious side effects. However, they are too short to assess risks such as heart attacks or heart failure.

Long-term data mainly comes from observational studies. Some show a statistical association between regular use and cardiovascular events.

This is not proof of causation, but it is a signal that should be taken seriously, especially with long-term use.

What this means for you

For occasional use, there is no clear risk scenario.

For daily use, the situation is different. A hormonal mechanism, limited benefits, and uncertainties about long-term safety come together.

This is particularly relevant given how widely available melatonin products are, often in formats designed for easy, routine use.

This combination is what makes the difference.

Context instead of oversimplification

Melatonin can be helpful in specific cases. But it is not a risk-free everyday solution.

Context matters: occasional use may be reasonable, long-term use should be viewed critically, especially regarding potential cardiovascular effects.

A particularly sensitive group is children and adolescents. During puberty, the hormonal system is highly dynamic. Melatonin directly interacts with these processes, while long-term safety data in this age group is limited.

Against this background, the widespread availability, even in gummies or sprays for children, appears contradictory.

The takeaway is simple: if a substance acts like a hormone, it should not be treated like a standard supplement, especially when benefits are limited and long-term safety remains unclear.

ASPRIVA: conscious avoidance of melatonin

For this reason, we deliberately avoid melatonin at ASPRIVA. Instead of forcing sleep through a hormonal signal, we support the body’s natural processes.

Sleep is the central phase of regeneration. Functional ingredients can support this without interfering directly with hormonal regulation. One example is Montmorency tart cherry, known in professional sports for its high polyphenol content.

ASPRIVA SLEEP combines plant extracts like passionflower, lemon balm, and chamomile with vitamin B6 in a simple evening routine. Not a capsule, but a warm drink. Cocoa and tart cherry, low in sugar.

Because sleep is not something you take. Sleep is something that happens.