Best magnesium supplement for sleep, tried and tested by experts 2026

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An empty bed with ruffled bedsheets — VTT Studios via Getty Images

When we think about staying healthy, nutrition and movement usually take centre stage. However, the role sleep plays in supporting both physical and mental wellbeing is just as important and often overlooked.

If you are hoping to improve the quality of your sleep, adding a magnesium supplement to your evening routine may be worth considering. You can also boost your intake naturally by including more magnesium-rich foods in your diet, such as leafy green vegetables, nuts and seeds.

Magnesium is known to support relaxation and sleep by influencing muscle function, hormone production and brain signalling. It plays a role in the production of melatonin, the hormone that helps regulate your sleep–wake cycle, and helps calm the nervous system by regulating key neurotransmitters.

Below, we share our picks of the best magnesium supplements to support a better night’s sleep.

Looking for further guidance? Read our guide on the best magnesium supplements for more information.

Jump to:

Best magnesium supplements for sleep at a glance
Best magnesium supplements for sleep 2026
What's the best way to take magnesium?
How much magnesium should I take for sleep?
What type of magnesium is best?
How we test magnesium supplements

Best magnesium supplements for sleep at a glance

Best magnesium supplement for sleep to buy in bulk: Vitabright Magnesium Glycinate, £19.99
Best sustainable magnesium supplement for sleep: Nutrition Geeks Magnesium Glycinate, £9.99
Best subscription-friendly magnesium supplement for sleep: Heights Magnesium+, £30
Best multi-purpose magnesium for sleep: The Gut Co. Magnesium Complex 3-in-1, £23.99
Best affordable magnesium supplement for sleep: ZipVit Magnesium Glycinate, £8.99
Best ethical magnesium supplement for sleep: Viridian Magnesium Biglycinate, £18.99
Best everyday magnesium supplement for sleep: New Leaf Magnesium Glycinate, £9.99

Best magnesium supplements for sleep 2026

Vitabright Magnesium Glycinate

Available from Vitabright (£19.99), Amazon (£17.09)

Best magnesium supplement for sleep for buying in bulk

Star rating: 5/5

Vitabright is brand that we've been consistently impressed by when it comes to its supplements, and the Magnesium Glycinate proved no exception. One bottle contains 180 capsules, enough to last you for three months with the recommended dose of two per day. The capsules are free from fillers and suitable for those on a vegan diet, and two capsules combined contains your daily recommended dose of magnesium.

Available from:
Vitabright (£19.99)
Amazon (£17.09)

Nutrition Geeks Magnesium Glycinate

Available from Amazon (£9.99)

Best sustainable magnesium supplement for sleep

Star rating: 5/5

If you're looking for a well-rounded magnesium supplement, this could be a strong option. Each two-capsule serving provides 192mg of elemental magnesium from a blend of glycinate, malate (for muscle tension) and citrate (which may help reduce anxiety).

We also liked the low-waste sachet packaging, which uses 95% less plastic than a typical bottle. While it's not the cheapest option per unit, it’s still one of the more affordable multi-form blends on the list.

Available from:
Amazon (£9.99)

Heights Magnesium+

Available from Healf (£30)

Best subscription-friendly magnesium supplement for sleep

Star rating: 4.5/5

You may have seen Heights advertised on social media — it's an online-only subscription service, with flat bottles that are designed to be letterbox-friendly. At £30 for a bottle of 60 capsules, it's by far the most expensive on this list, but there is a money-back offer if you aren't happy with the product.

The dose of two capsules provides your recommended daily intake of magnesium glycinate, and it's suggested you take them in the evening to gain the full sleep benefits.

Available from:
Healf (£30)

The Gut Co. Magnesium Complex 3-in-1

Available from Amazon (£23.99)

Best multi-purpose magnesium for sleep

Star rating: 4/5

If you want a magnesium supplement that goes beyond sleep support, this is a well-formulated choice. Each two-capsule serving delivers 375 mg of elemental magnesium from three highly absorbable forms: citrate, glycinate and malate, chosen for their complementary benefits.

The citrate form supports energy metabolism and relaxation, the glycinate form helps promote calm and nervous system balance, and the malate form supports muscle recovery and cellular energy.

This formula is designed to be gentle on digestion and free from fillers or harsh laxatives, making it suitable for everyday use and particularly for evening routines aimed at better rest.

While more expensive than basic magnesium supplements, the multi-benefit blend makes it a versatile option if you want one supplement to support sleep, stress resilience, muscle recovery and daily energy.

Available from:
Amazon (£23.99)

ZipVit Magnesium Glycinate

Available from Amazon (£9.99)

Best affordable magnesium supplement for sleep

Star rating: 4/5

Zipvit’s magnesium supplement delivers 200mg of magnesium glycinate per tablet and the brand recommends a one-tablet daily serving - giving a solid dose for sleep support, especially for those preferring a single-tablet format. It also includes vitamin B6, which may help the body absorb magnesium more effectively.

With a three-month supply priced at under £11 it offers the best value per tablet on our list - particularly if you're looking for a high-strength formula at a low daily cost.

Available from:
Amazon (£9.99)

Viridian Magnesium Biglycinate

Available from Amazon (£18.99), bodykind (£21.72)

Best ethical magnesium supplement for sleep

Star rating: 3.5/5

Viridian is a brand that prides itself on its ethical ethos, as well as the quality of its supplements, which are formulated by nutritionists and contain fully traceable ingredients. The recommended dosage is 2-4 capsules per day, with two capsules providing 280mg magnesium.

Available from:
Amazon (£18.99)
bodykind (£21.72)

New Leaf Magnesium Glycinate

Available from Amazon (£9.99)

Best everyday magnesium supplement for sleep

Star rating: 3.5/5

In the two capsules that make up your daily dose of this supplement, you'll get 208mg of magnesium. Although the dose may be lower than many other supplements on this list, this supplement fulfils lots of criteria in terms of being free from GMOs and allergens and suitable for vegans.

Each bottle contains a two-month supply.

Available from:
Amazon (£9.99)

What's the best way to take magnesium?

As with most supplements, it's best to take your magnesium with food and water, and you should avoid taking it at the same time as any other mineral supplement.

If you're taking magnesium specifically to help you sleep, take it around two hours before you fall asleep for the best results.

Magnesium can be taken in supplement form as a capsule, a spray or as flakes to use in your bath. Though the supplements in this list are capsules, there is some limited research to show that magnesium may be absorbed when applied to the skin, specifically to areas where there are hair follicles, such as your arms and legs.

How much magnesium should I take for sleep?

For adults aged 19-64, the NHS recommends a daily magnesium intake of 300mg for men and 270mg for women. However, there are a number of factors that will affect how much magnesium you should be looking to supplement, which include your age and life stage, as well as any health or dietary issues you may have.

Something to look out for when choosing a magnesium supplement is the amount of 'elemental magnesium' indicated on the label. Compounds, such as magnesium oxide, won't contain as much as the pure form.

What type of magnesium is best?

You may have seen different types of magnesium on offer in supplement form. It is usually provided in compound form, where the secondary element can provide health benefits in addition to the magnesium.

When it comes to the best magnesium for sleep, the best forms are magnesium glycinate and magnesium chloride. Both can also benefit anxiety and mood, which may prove to help your sleep too.

How we test magnesium supplements

When testing magnesium supplements, our nutritionist Kerry Torrens evaluated each product based on the strengths and limitations of the different forms of magnesium used, alongside the dosage provided and how the supplement is delivered.

We also scored each product using a range of criteria, including cost per dose, how much of the recommended daily intake it supplies, and whether the form and format of magnesium are likely to affect absorption.

In addition, every supplement was tested by our review panel, who assessed factors such as taste and smell, the sustainability of the packaging and how easy each product was to take as part of a daily routine.