Melatonin side effects
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Common Melatonin Side Effects in Adults and Children
Melatonin is widely used for sleep disorders and is generally considered safe, but it can cause some side effects. The most frequently reported side effects in both adults and children include drowsiness, headache, dizziness, fatigue, and sometimes confusion or nightmares. These effects are usually mild and short-lived, often resolving on their own or after stopping melatonin use 1234+1 MORE. In rare cases, people may experience mood swings, agitation, or skin irritation .
Serious Adverse Events and Overdose
Serious side effects from melatonin are very rare. Even in cases of overdose, such as taking a large number of tablets, the main symptoms are usually drowsiness and mild hypothermia, with no life-threatening effects reported. Supportive care and monitoring are typically all that is needed . Studies have not found an increased risk of serious adverse events or withdrawals due to side effects, even at higher doses (10 mg or more) .
Long-Term Use and Special Populations
There is limited information about the long-term safety of melatonin, especially in children and adolescents. Some studies suggest that children using melatonin may experience more non-serious side effects, but there is little evidence of serious harm. There are also concerns about possible effects on puberty and bone health with long-term use in children, but current studies show little or no impact over 2–4 years, with only one study suggesting a possible delay in puberty after more than 7 years of use. More research is needed to fully understand these risks .
Effects in Specific Conditions
In people with Alzheimer’s disease, melatonin at higher doses (10 mg) has been linked to negative reaction times, sedation, and confusion, but these effects are not common and usually occur at higher doses . In children with autism spectrum disorder, melatonin is generally well tolerated, with no major adverse effects reported .
Endocrine and Cardiovascular Considerations
Some studies have noted that melatonin can affect reproductive hormones, glucose metabolism, blood pressure, and heart rate, especially when taken at higher doses or in combination with certain medications. These effects are usually minor and can often be managed by adjusting the dose or timing of melatonin .
Conclusion
Melatonin is generally safe and well tolerated, with most side effects being mild and temporary, such as drowsiness, headache, and dizziness. Serious side effects are rare, even at higher doses. However, there is limited data on long-term use, especially in children, and some concerns remain about possible effects on puberty and interactions with other medications. More research is needed to fully understand the long-term safety of melatonin, particularly in children and people with certain health conditions.
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