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Melatonin is a natural hormone that regulates the sleep-wake cycle. Melatonin products may support short-term sleep problems, insomnia or disrupted body-clock timing. Compare melatonin tablets by strength, immediate or prolonged release, manufacturer, pack size and prescription status. Availability and regulation vary between countries.
Melatonin is produced by the brain in response to darkness. It signals that it is time to sleep and supports the circadian rhythm. Night-time light, travel, shift work and age can affect its timing.
Manufactured melatonin may be a prescription medicine or dietary supplement depending on the country. Formulations are not automatically interchangeable.
Using melatonin for sleep may help some people fall asleep sooner or adjust a disrupted sleep schedule. It can be considered for jet lag, delayed sleep timing and selected sleep disorders. The likely benefit depends on taking the appropriate formulation at the correct time.
Melatonin does not replace regular sleep times, reduced late-night screen exposure and limiting caffeine near bedtime.
Melatonin for insomnia may be recommended for short-term sleep problems or for particular patients under specialist care. Evidence for chronic insomnia is mixed, so it is not the best option for everyone. Cognitive behavioural therapy for insomnia and treatment of underlying causes may also be recommended.
Persistent insomnia can have an underlying medical, psychological or lifestyle cause that should be assessed before long-term use.
People asking “is melatonin a sleeping pill?” should know that it differs from conventional sedatives. This sleep-regulating hormone encourages the body to prepare for sleep and may cause drowsiness.
There is no universal melatonin dosage. The amount and timing depend on age, reason for use, strength and whether the tablet is immediate or prolonged release.
Follow the label or prescription exactly. Do not take extra tablets if sleep does not improve immediately. Prolonged-release tablets should usually be swallowed whole rather than crushed unless the product instructions say otherwise.
Possible melatonin side effects include:
Daytime sleepiness or tiredness
Headache
Dizziness
Nausea or stomach discomfort
Irritability or restlessness
Dry mouth
Vivid or unusual dreams
Do not drive, cycle or operate machinery if drowsy, dizzy or unable to concentrate. Alcohol and other sedating products can increase these effects.
Seek medical help for fainting, severe confusion, persistent blurred vision, unexplained bleeding, breathing difficulty or swelling of the face, lips, tongue or throat.
Melatonin tablets side effects can vary with the strength, release type, timing and other medicines being used. Taking a higher dose does not guarantee better sleep and may increase next-day drowsiness, headache or dizziness.
The common side effects of melatonin in adults are generally mild and short-lived. Daytime tiredness, nausea, headache and dizziness are among the most frequently reported. Contact a healthcare professional if symptoms persist, become severe or interfere with daily activities.
The phrase melatonin side effects in elderly people often refers to prolonged drowsiness and dizziness. Melatonin may remain active for longer in older adults. Reduced alertness can contribute to confusion or falls, especially when combined with sedatives or medicines that lower blood pressure.
Older adults should have their complete medicine list reviewed and use only the recommended strength and formulation.
Tell a doctor or pharmacist about liver or kidney problems, epilepsy, autoimmune conditions, pregnancy, breastfeeding or planned surgery. Medical advice is important because safety data during pregnancy and breastfeeding are limited.
Melatonin can interact with blood thinners, blood-pressure medicines, antidepressants, epilepsy medicines, opioids, benzodiazepines, conventional sleeping tablets and other sedating products. Avoid alcohol and do not combine sleep products without professional advice.
Melatonin and conventional sleeping pills work differently. Melatonin may have a lower risk of dependence than some sedative medicines but may also provide a milder effect. The better option depends on the cause of the sleep problem, medical history and other medicines.