Can you buy melatonin in the UK?

Can you buy melatonin in the UK?

Not without a prescription. Melatonin is a prescription-only medicine in the UK, and the government's guidance on how medicines are classified is plain about what that means: a member of the public cannot buy one. A prescription-only medicine has to be prescribed by an authorised health professional and then dispensed, usually by a pharmacy.

That rules out the places people tend to look. In some countries melatonin is sold in health food shops and online as a supplement, but the NHS says those supplements aren't authorised for sale in the UK.

Where can I get melatonin in the UK?

From a pharmacy, with a prescription. In practice there are three routes:

• Your GP, if you're 55 or over and have short-term insomnia. The NHS says most adults in this age group can take melatonin for short-term sleep problems.
• A specialist, for children and for adults under 55 with longer-term sleep problems. The NHS says these groups can take it if a specialist recommends it.
• A prescriber, for jet lag. Melatonin is licensed for short-term jet lag in adults, but the NHS says it may not be available on NHS prescription for this.

Can you buy melatonin at Boots?

Not off the shelf. Boots, like any UK pharmacy, can dispense melatonin when you hand in a prescription. Boots and several other pharmacy chains also run online doctor services that offer melatonin for jet lag: you complete a consultation, a prescriber reviews it, and they issue a prescription only if they think it's suitable. That prescription covers a few nights of travel. It isn't a route to nightly melatonin for insomnia.

If you use any online service, the NHS says to check that the pharmacy is registered with the General Pharmaceutical Council (GPhC), and that any online doctor service is registered with the Care Quality Commission (CQC) and the General Medical Council (GMC).

Is melatonin illegal or banned in the UK?

No. Melatonin is a licensed medicine in the UK and doctors prescribe it routinely. The restriction is on how it's supplied. Licensed UK products include 2 mg prolonged-release tablets for insomnia in people aged 55 and over, 3 mg tablets for jet lag in adults, and products for children and teenagers with autism, ADHD or certain genetic conditions whose sleep hasn't improved with changes to their routine.

So the answer to "why is melatonin banned in the UK?" is that it isn't. It's classed as a medicine, and in the UK a medicine's legal category decides where you can get it.

Is melatonin a controlled drug in the UK?

No. Melatonin isn't on the Home Office list of drugs controlled under the Misuse of Drugs Act, which does include some prescription sleeping tablets, such as zopiclone, zolpidem and temazepam. UK listings for licensed melatonin products give its category as prescription-only medicine.

Why is melatonin prescription-only in the UK?

Because it's licensed as a medicine, and a UK medicine stays on prescription when it meets criteria set out in the Human Medicines Regulations 2012. According to the MHRA's guidance, that applies when a medicine:

• could be a direct or indirect danger to health if used without medical supervision, even when used correctly
• is often used incorrectly in ways that could cause harm
• needs further investigation of its effects or side effects

A company can apply to the MHRA to move a medicine to pharmacy or general sale, but it has to show the medicine can be used safely without that supervision.

The UK product information and NHS guidance show the kind of thing a prescriber checks before melatonin is suitable:

• It can make you drowsy. The NHS says not to drive, cycle or use machinery if it makes you sleepy or dizzy, or leaves you unable to concentrate.
• It can interact with a long list of medicines, including the antidepressant fluvoxamine, benzodiazepines, blood pressure medicines, warfarin and sleeping tablets such as zopiclone.
• The NHS asks people with liver or kidney problems, or an autoimmune condition such as rheumatoid arthritis or lupus, to tell their doctor before taking it. The product information for the over-55s tablets doesn't recommend it with liver impairment or autoimmune disease.
• It isn't recommended in pregnancy or for women trying to get pregnant, because there are no clinical data.
• The NHS warns that alcohol and melatonin together can make you sleep so deeply that you don't breathe properly.

The sleep problem itself matters too. The NHS lists stress, anxiety, depression, sleep apnoea, an overactive thyroid and the menopause among the causes of insomnia, and a GP will look for those first. Even where melatonin is licensed, the effect is modest: in the main sleep-laboratory study behind the over-55s tablets, people fell asleep 9 minutes sooner than on placebo.

Who can get melatonin on prescription?

Is it legal to order melatonin online in the UK?

A website that sells melatonin without asking for a prescription is supplying a medicine outside the regulated system, and you have no way of knowing what's in it. The NHS says ordering melatonin online is not recommended, and warns that medicines from unregistered websites may be out of date, diluted or fake. The MHRA's advice is to buy medicines only from regulated suppliers, such as registered pharmacies, and to be wary of websites or social media posts offering medicines without a prescription.

Orders can also be stopped at the border. In two weeks in March 2026, the MHRA and Border Force seized more than two million doses of illicit medicines. Over half were controlled drugs, and the rest were prescription-only medicines.

Can you buy melatonin gummies in the UK?

Not legally. Melatonin is a prescription-only medicine in the UK, and the NHS says melatonin sold as a supplement isn't approved for sale here. The NHS says prescribed melatonin comes as tablets, slow-release tablets, capsules or a liquid, not gummies. So a gummy sold in the UK as a food supplement should list other ingredients, and the risk lies in products that don't follow the rules: the dose on the label may not be the dose in the gummy, and melatonin has turned up in products that don't list it.

• In a 2023 study in JAMA, researchers tested 25 melatonin gummy products sold in the US. The melatonin content ranged from 74% to 347% of the labelled amount, and only 3 products were within 10% of the label.
• A 2017 Canadian study of 31 melatonin supplements found content ranging from 83% below to 478% above the label, and 8 of them contained serotonin.
• In August 2025 the MHRA told parents to stop using a brand of children's magnesium gummies sold online in the UK. Its tests found 1.5 to 1.7 mg of melatonin in each gummy, and none of it was declared on the label. The MHRA said too much melatonin can cause drowsiness, headache, dizziness and nausea, although lasting harm isn't expected.

What do UK sleep gummies contain instead?

A sleep gummy sold legally in the UK is a food supplement, so its label should list ingredients other than melatonin. Our guide to UK sleep supplements covers the ones used most often, such as magnesium, glycine, L-theanine, ashwagandha and lemon balm, and what the research on each shows. Check the ingredients list and the amount per gummy, and ask a pharmacist first if you take regular medicines. The MHRA case above is a reminder that a label isn't always complete: a children's magnesium gummy sold online as a food supplement contained melatonin that the pack didn't declare.

Melatonin gummies for adults

Adults can get melatonin in the UK only on prescription, for example as 2 mg prolonged-release tablets for short-term insomnia from age 55. Adult gummies bought online sit outside that system, and their strength is unpredictable. In the 2023 JAMA study, the 25 US gummies measured 1.3 to 13.1 mg of melatonin per serving, and only 3 were within 10% of the label. Against the licensed 2 mg, the strongest was more than six times as much, and the NHS says ordering melatonin online is not recommended.

Can children have melatonin gummies?

No gummy bought online is a safe route. In the UK, melatonin for children is a prescription medicine, authorised for specific sleep disorders in children over 6 when other approaches haven't worked, and the NHS says children can take it for longer-term sleep problems only if a specialist recommends it. Gummies marketed to children are food supplements, so they shouldn't contain it.

In 2025 the MHRA found about 1.5 to 1.7 mg of undeclared melatonin in each gummy of a children's magnesium product marketed for ages 4 and over. Following the pack, a child could have taken roughly 1.5 to 3.4 mg a day. The authors of the JAMA study note that as little as 0.1 to 0.3 mg can raise night-time melatonin levels in young adults, so amounts like these could be many times what was intended for a child. If you gave a child a product like this, stop, store it out of their reach and ask a pharmacist, GP or NHS 111 about any symptoms. You can report suspected side effects through the MHRA Yellow Card scheme.

Which foods contain melatonin?

Many plant foods contain melatonin, but only in tiny amounts, and eating them isn't comparable to a prescribed dose. A 2017 review of dietary sources measured melatonin in nanograms per gram: about 13.5 ng/g in fresh Balaton tart cherries, 11 ng/g in strawberries and about 15 to 24 ng/g in tomatoes, depending on the variety. A milligram is a million nanograms, so matching 1 mg would take roughly 74 kg of those cherries (our arithmetic), and only a fraction of oral melatonin reaches the blood: the review cites about 15% for tablets in one study. Figures also vary with ripeness, growing conditions and how they are measured.

The review mentions a small study of 12 men in which banana, orange juice and pineapple juice each raised blood melatonin for a couple of hours, but it says clinical trials are still needed to clarify what melatonin does in people. Our tart cherry guide covers the sleep research on cherries.

What can you try instead of melatonin?

Start with your sleep habits, then talk to a pharmacist or GP if they don't help.

1. Give your habits a few weeks. The NHS suggests going to bed only when you're sleepy, getting up at the same time every day, relaxing for an hour before bed, keeping the bedroom dark and quiet, and avoiding tea, coffee and alcohol for 6 hours before bed. If a fixed wake-up time is the hard part, our sleep calculator works out bedtimes from it.
2. Ask a pharmacist. Pharmacies sell sleep aids, some containing valerian or lavender and others an antihistamine. The NHS says they may help for 1 to 2 weeks, can't cure insomnia and shouldn't be taken for longer, and some can leave you drowsy the next day.
3. See a GP if changing your habits hasn't helped, if you've struggled for months, or if poor sleep is making it hard to cope. A GP can offer cognitive behavioural therapy for insomnia (CBT-I), face to face or as an online programme. NICE describes referral for CBT-I as best practice when insomnia isn't likely to settle soon, and recommends a digital CBT-I programme for people who would otherwise be offered sleep hygiene advice or sleeping pills.

The NHS says GPs now rarely prescribe sleeping pills. If you're weighing up supplements instead, our guide to magnesium and sleep grades the evidence for the most popular one.

Where Natura fits

Natura sells food supplements, not medicines, so we don't sell melatonin and nothing in our cabinet (coming soon) contains it. None of our products can claim to help you sleep, because none of the ingredients we use has an authorised sleep claim, and none is a substitute for seeing a GP about insomnia. Our guide to UK sleep supplements explains what they contain and what the research shows.