Melatonin for Children: What Parents Should Know First

By the time a parent asks us about melatonin, they are usually exhausted. Months of two-hour bedtimes, or a child who is still awake at midnight, and someone — a relative, a chemist, a parenting group — has said it is natural, it is harmless, and everyone uses it.

Some of that is true. A good deal of it is not, and the parts that are not matter more here than they do in countries where the product is tightly regulated.

We are not doctors and we do not prescribe. This page is here so that the conversation you have with your doctor is a better-informed one.

What melatonin actually is

Melatonin is not a sedative. It does not knock a child out, and taking more of it does not produce a deeper sleep.

It is a hormone the brain releases as the light fades, and its job is to tell the body that night has begun. Given as a supplement it acts as a timing signal — it moves the body clock, rather than switching consciousness off.

That distinction explains most of what follows, including why it works well for one kind of sleep problem and does essentially nothing for another.

What the research shows it does

A systematic review and meta-analysis in Developmental Medicine & Child Neurology pooled five randomised, double-blind, placebo-controlled crossover trials in autistic children. Compared with placebo, melatonin produced:

• Falling asleep about 39 minutes faster.
• About 44 minutes more sleep overall.
• No significant improvement in night-time waking.

That third line is the one parents are almost never told, and it is the most useful thing on this page. Melatonin helps a child get to sleep. It does not keep them asleep.

So if your child falls asleep within twenty minutes and then wakes at two in the morning and stays awake, melatonin is not the answer to the problem you actually have — and a good number of families are giving it nightly for exactly that.

The same review reported side effects as minimal to none, and noted its own limitations honestly: small sample sizes and variation in how the trials measured sleep. It is genuine evidence, not overwhelming evidence.

The safety problem specific to buying it here

This is the part that changes the calculation in Pakistan, and it has nothing to do with melatonin itself.

Researchers writing in the Journal of Clinical Sleep Medicine chemically analysed 31 commercial melatonin supplements. What they found:

• Actual melatonin content ranged from 83% less to 478% more than the label claimed.
• More than 71% of the supplements missed their own label by more than a 10% margin.
• Batch-to-batch variation within a single product reached 465%.
• 26% contained serotonin — a different, controlled substance that had no business being in there.

Those products were bought in a country with an active supplement regulator. A bottle bought off a shelf here has had less oversight, not more. The practical meaning is simple: you cannot be confident that the dose on the label is the dose in the bottle, and buying the same brand again is not a guarantee of the same product.

It is medicine, so store it like medicine

Melatonin is frequently sold as a sweet, and children treat it accordingly.

An analysis published in the CDC's MMWR looked at ten years of paediatric melatonin ingestions reported to poison centres in the United States. Over that period there were 260,435 of them, and the annual number rose by 530%. By 2021 melatonin accounted for 4.9% of all paediatric poison-centre calls, up from 0.6% in 2012. The increase was driven mainly by unintentional ingestion by children under five. Over the ten years, five children required mechanical ventilation and two died.

Nothing about that means melatonin is dangerous when a doctor has decided a child should have it. It means a bottle of sweet-tasting tablets within a small child's reach is a hazard, and gummy forms are the worst of both worlds. Store it where you would store any other medicine.

What to do before melatonin, not instead of asking

Melatonin shifts the timing of sleep. It cannot fix a bedtime that has no timing to shift.

If the routine is different every night, if the child falls asleep on a sofa with the television on and is carried to bed, or if bedtime is a two-hour negotiation, then the problem is not a missing hormone. Working on that first is not a delaying tactic — it is what makes melatonin work if you do end up using it, and it is frequently enough on its own. Our guide to helping your child sleep better and our sleep home program cover this week by week.

Two details are worth changing tonight regardless. Screens in the hour before bed suppress the body's own melatonin, so a child on a phone at bedtime is working against the exact thing you are considering buying. And bright overhead light does the same, which is why a dim room in the last half hour helps more than parents expect.

The things that imitate a sleep problem

Ask a doctor about these before starting anything, because each has a different answer and none of them is melatonin.

• Snoring, mouth-breathing, or pauses in breathing. A child whose airway is partly obstructed at night wakes repeatedly, sleeps badly and is exhausted, irritable and inattentive by day. This is common, treatable, and frequently missed.
• Restless legs and an urge to move at night, which can be linked to low iron.
• Itching. Eczema wakes children reliably and parents often do not connect the two.
• Constipation and stomach pain, which are more common in autistic children and disturb sleep without producing an obvious complaint.
• Anxiety. A child lying awake with worries is not short of melatonin. See childhood anxiety.
• A sensory mismatch. Bedding, labels, noise, heat. For some children the bed itself is the problem — see sensory processing difficulties.

Questions worth asking your doctor

1. Is this a problem of falling asleep, or of staying asleep? Melatonin has good evidence for the first and not the second.
2. What dose, and at what time? Timing matters more than most parents realise, and it is not simply "at bedtime".
3. How long should we use it, and how will we know when to stop?
4. Should anything else be checked first — breathing at night, iron, constipation?
5. Does it interact with anything else my child takes?

We are not going to publish a dose on this page. Deciding whether a particular child should take this, at what strength and for how long, is a medical decision, and giving a number here would encourage exactly the thing that ends in a poison-centre statistic.

Where we fit

We do the behavioural half, which is most of it: working out what is actually keeping your child awake, building a bedtime that holds, and dealing with the sensory and anxiety reasons a particular child cannot settle. For a good number of families that resolves it without anything from a chemist.

Where a doctor has decided melatonin is appropriate, the two work together — the routine gives the timing signal something to attach to. What we will not do is tell you whether your child should take it, because that is not our decision to make.

A consultation is Rs 1,500 and lasts up to 50 minutes, we work in Urdu or English, and you do not need a referral.

If your child also grinds their teeth in their sleep, see teeth grinding at night — the one trial with a usable result there tested sleep hygiene, not a tablet.

Sources

• Rossignol DA, Frye RE. Melatonin in autism spectrum disorders: a systematic review and meta-analysis. Dev Med Child Neurol. PubMed 21518346
• Erland LAE, Saxena PK. Melatonin Natural Health Products and Supplements: Presence of Serotonin and Significant Variability of Melatonin Content. J Clin Sleep Med. PubMed 27855744
• Lelak K, Vohra V, Neuman MI, et al. Pediatric Melatonin Ingestions — United States, 2012–2021. MMWR Morb Mortal Wkly Rep. PubMed 35653284

The other product parents are most often sold for sleep is a weighted blanket — see what the randomised trial found.

Screaming episodes early in the night are not a sleep-onset problem and melatonin does not address them — see night terrors.