Best Melatonin Supplements in the UK: Reviewed & Ranked for 2026

With so many melatonin supplements on the market, it can be hard to know which one is right for you. We've ranked the best melatonin products available to UK customers in 2026, covering extra-strength tablets, maximum-strength dual action formulas, gummies, quick-dissolve tablets and liquid.

How we ranked them

Our picks are based on what our UK customers actually choose, together with what each product offers on its label: strength, format, bottle size and ingredients. We only include products we stock and ship to the UK ourselves. This guide is not medical advice: always follow the label and speak to your doctor or pharmacist about which product suits you.

What to look for in a melatonin supplement

• Strength: melatonin ranges from 1mg to 10mg. Not sure where to start? Read our melatonin dosage guide.
• Format: quick-dissolve tablets melt under the tongue, dual action tablets release melatonin in two stages, gummies are easy to chew, and liquid lets you measure your serving.
• Bottle size: larger bottles mean fewer reorders and better value per serving.
• Ingredients: check for vegetarian, vegan or gluten-free options if they matter to you.
• Brand: choose established brands. Many of the Canadian products below are authorised by Health Canada.

Our top melatonin picks for UK customers (2026)

🥇 Best Overall: Webber Naturals Melatonin 5mg Extra Strength, 400 tablets

Webber Naturals Melatonin 5mg Extra Strength Easy Dissolve (400 tablets)

Our most popular melatonin by far. Each easy-dissolve tablet provides 5mg of melatonin and melts under the tongue, so no water is needed. With 400 tablets per bottle, it is a 200 to 400 day supply depending on your serving, one of the largest bottles available, with a long 2 to 3 year expiry date. It contains no artificial colours, preservatives or sweeteners, is gluten-free and yeast-free, and is authorised by Health Canada (NPN 80008343).

Strength: 5mg | Format: easy-dissolve tablet | Count: 400

🥈 Best Maximum Strength: Adrien Gagnon Melatonin 10mg Dual Action

Adrien Gagnon Melatonin 10mg Dual Action Extra-Strength (160 tablets)

Our second best seller and our top pick at maximum strength. Each tablet has two layers: the first 5mg dissolves quickly and the second 5mg is released gradually through the night. Its Health Canada label claims include helping to extend sleep in case of early awakenings. Made in Canada, gluten-free, dairy-free and non-GMO (NPN 80044500).

Strength: 10mg | Format: dual action tablet | Count: 160

🥉 Best Melatonin Gummies: Nature's Bounty Melatonin Gummies

Nature's Bounty Melatonin Gummies, Strawberry (180 gummies)

Our best-selling gummy. Each strawberry-flavoured gummy contains 2.5mg of melatonin, so a two-gummy serving gives you 5mg. With 180 gummies per bottle, you get up to 90 servings. A great choice if you prefer not to swallow tablets.

Strength: 2.5mg per gummy (5mg per serving) | Format: gummy | Count: 180

Best Gummy with Botanicals: OLLY Sleep

OLLY Sleep Gummies, Blackberry Zen (50 gummies)

OLLY Sleep combines 3mg of melatonin per serving with L-Theanine and botanicals such as chamomile, passionflower and lemon balm, in a natural blackberry flavour. No artificial flavours or colours, gluten-free. A 25-day supply per bottle.

Strength: 3mg per serving | Format: gummy | Count: 50

Best Dual Action Alternative: Webber Naturals Melatonin 10mg Dual Action Release

Webber Naturals Melatonin 10mg Maximum Strength Dual Action (60 or 120 tablets)

Bi-layer technology releases 5mg of melatonin immediately, followed by a gradual release of another 5mg. Suitable for vegetarians and vegans, with no artificial colours, preservatives or sweeteners.

Strength: 10mg | Format: dual action tablet | Count: 60 or 120

Best Low Strength: Webber Naturals Melatonin 1mg and 3mg Quick Dissolve

Webber Naturals Melatonin 1mg Quick Dissolve (90 tablets) and Webber Naturals Melatonin 3mg Quick Dissolve (90 or 180 tablets)

If you prefer a gentle strength, these vegetarian quick-dissolve tablets are a good place to start. They melt under the tongue with no water needed.

Strength: 1mg or 3mg | Format: quick-dissolve tablet | Count: 90 to 180

Best Liquid: Adrien Gagnon Liquid Melatonin 3mg

Adrien Gagnon Liquid Melatonin 3mg, Wildberry (110ml)

A 3mg melatonin liquid with a natural wildberry flavour and a dropper, so you can measure your serving instead of swallowing a tablet.

Strength: 3mg | Format: liquid | Size: 110ml

Melatonin comparison table

Product	Strength	Format	Count	Best for
Webber Naturals 5mg Easy Dissolve	5mg	Easy-dissolve tablet	400	Best overall, best value
Adrien Gagnon 10mg Dual Action	10mg	Dual action tablet	160	Maximum strength
Nature's Bounty Gummies	5mg per serving	Gummy	180	Best gummy
OLLY Sleep	3mg per serving	Gummy	50	Melatonin with botanicals
Webber Naturals 10mg Dual Action	10mg	Dual action tablet	60 / 120	Vegan maximum strength
Webber Naturals 1mg / 3mg	1mg / 3mg	Quick-dissolve tablet	90 / 180	Low strength
Adrien Gagnon Liquid	3mg	Liquid	110ml	Adjustable serving

Best melatonin gummies: compared

Prefer gummies? Here are all the melatonin gummies we stock, side by side.

Gummy	Melatonin	Count	Good to know
Nature's Bounty	2.5mg per gummy	180	Strawberry, our best-selling gummy
Jamieson	2.5mg per gummy	60 / 130	Natural strawberry, vegetarian, gluten-free
Vitafusion SleepWell	5mg per serving	60	With chamomile and lemon balm
Vitafusion SleepWell Plus	10mg per serving	100	With chamomile, passion flower and lemon balm
Webber Naturals 10mg	10mg	60	Vegan, cherry pomegranate
OLLY Sleep	3mg per serving	50	With L-Theanine and botanicals

Frequently asked questions

Which melatonin is best for me?
It depends on the strength and format you prefer. Our customers' favourite is Webber Naturals 5mg Easy Dissolve. For help choosing a strength, see our melatonin dosage guide, and ask your doctor or pharmacist if you are unsure.

Gummies or tablets: which is better?
They are different formats with the same active ingredient. Gummies are easier to take if you dislike tablets, while large tablet bottles usually offer more servings per bottle.

When should I take melatonin?
Most of our product labels recommend taking melatonin at or shortly before bedtime, for example 30 minutes or 30 to 90 minutes before bed. Always follow the label of the product you buy.

Can I take melatonin every night?
The labels of the products we sell advise consulting a health care practitioner for use beyond 4 weeks.

How long does delivery to the UK take?
Orders are prepared within 2 business days, then usually arrive in the UK within 2 to 6 business days.

Ready to sleep better?

Browse our full melatonin range for UK customers and find your perfect match.

This article is for general information only and is not medical advice. Our products are dietary supplements and are not intended to diagnose, treat, cure or prevent any disease. Always read the label and speak to a healthcare professional before starting any new supplement.