Melatonin

In the UK melatonin is a prescription-only medicine, not a food supplement.

By the Supplements UK editorial team. Last checked 9 October 2026. General information, not medical advice.

Short answer In the UK melatonin is a prescription-only medicine, not a food supplement. Gummies and tablets sold online to UK buyers are not authorised products.

What to do instead

Speak to a GP about persistent sleep problems. Sleep habits, light and caffeine timing come first.

Alternatives people try

See magnesium, where the evidence for sleep is limited.

Keep exploring

Questions people ask

What should I know about melatonin?

In the UK melatonin is a prescription-only medicine, not a food supplement.

Can I take this with medication?

Ask a pharmacist or GP first; some supplements interact with medicines.

Do supplements replace a balanced diet?

No. They are meant to add to a varied diet, not stand in for one.

Sources

Checked 9 October 2026.