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Magnesium⁺

4.7
Rated 4.7 out of 5 stars
4.7 Stars (1,941 Reviews)
4.7
Rated 4.7 out of 5 stars
4.7 Stars (1,941 Reviews)

Join Spencer and +100,000 others who take Magnesium⁺—a clean, gentle formula for head-to-toe health.

1 ingredient (magnesium glycinate), powering 300+ bodily functions. Made by scientists and dietitians to keep all your engines running.

  • Samantha
    7 June 2025

    I wear a Whoop and my sleep has improved 100%! I was taking magnesium but I didn’t realise there were a few variations and I had been taking the wrong one. As soon as I started taking these…wow!

  • Fiona W.
    16 May 2025

    Sleeping like a baby!! Wouldn't be without them...

  • Bjorn T.
    5 May 2025

    One of the better quality magnesium supplements I've tried, as it's not pumped full of thickeners and fillers as many others are. So far I feel good effects from it in terms of recovery from workouts, and more settled, deeper sleep.

  • Jonathan
    4 July 2025

    Key body metrics all up. Since using this I have seen an improvement in HRV, Pulse Ox, and recovery. I can go for a ride, play tennis and I know I won't feel as meh in the morning anymore.

  • Lorna
    6 July 2025

    Best out there! After 3 months I'm back sleeping through the night which is amazing when you are a woman in your 40s!

  • Amy S.
    10 June 2025

    Heights magnesium has completely transformed my sleep. After years of not sleeping well I had tried everything. I am a life long heights convert these days.

  • Feel calmer

    Known for its calming properties and contributes to the reduction of tiredness and fatigue.

  • Fuel your workouts

    Supports an active lifestyle by contributing to muscle function and recovery after exercise.

  • Rest & recover

    Contributes to electrolyte balance, nervous system function, and maintaining healthy bones.

  • Stay energised

    Promotes normal energy metabolism so you can keep going.

  • Boost your performance

    Plays a key role in over 300 bodily functions, including energy production and muscle function.

  • Look after your mental health

    Contributes to normal psychological so you can feel your best.

  • Sharpen your focus

    Contributes to normal cognitive function, supporting memory, concentration and learning.

Magnesium glycinate

A single serving (2 capsules) of Magnesium⁺ delivers 300mg of elemental magnesium, providing 80% of the European daily recommended amount for magnesium. 

Outer capsule made from Hydroxypropyl Methylcellulose.

See full ingredients list

Take 2 capsules a day. We recommend in the evening, but anytime that suits your routine works for us.

Wash down with some water or juice, with or without food.

Store in a cool, dry place out of direct sunlight—no fridge necessary. 

Top tip: keep Magnesium⁺ on your bedside table to help build the habit.

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  • GLUTEN

  • GMOs

  • DAIRY

  • ANIMAL BY-PRODUCTS

  • FILLERS

  • ALLERGENS

  • CONTAMINANTS

  • ADDITIVES

  • TOXINS

  • HEAVY METALS

  • SUGAR

"This is key to supporting my overall health—from feeling calm, to getting deeper sleep to recovering quickly and feeling my best."

Spencer Matthews

Entrepreneur & British TV personality

Spencer: 3 reasons I choose Magnesium⁺

Help your body out

Your body can’t produce magnesium, but it’s key to nearly every biochemical process.

Better together

Magnesium enhances the potential of other nutrients, like vitamin D and calcium.

Recharge and recover

Magnesium supports sleep and relaxation, and helps your muscles recover after exercise.

Simply the best… magnesium compound

Our extensively researched formula uses magnesium glycinate, known to be highly absorbable and easy on your gut.

So your body can put that nutritional goodness to the best use. 

Formulated by experts

  • Sophie Medlin, RD Head of Nutritional Research

    Sophie Medlin is a consultant dietitian, chair of the British Dietetic Association for London, and founder of City Dietitians.

    Sophie Medlin, RD Head of Nutritional Research
  • Dr. Tara Swart, PhD Chief Science Officer

    Dr Tara Swart is an Oxford-trained medical doctor, a neuroscientist with a PhD in neuropharmacology, and a senior lecturer at MIT.

    Dr. Tara Swart, PhD Chief Science Officer

We develop and update our formulas based on the latest research, working with dietitians and neuroscientists at the top of their game.

So you can be at yours.

Frequently asked questions

We’ve got the answers.

Research shows that magnesium glycinate (what we use in our formula) is the most absorbable magnesium compound—meaning your body can put it to the best use.

It’s particularly effective for supporting sleep, psychological function, muscle health, and nervous system function. It’s also kinder to your digestive system, so you can top up magnesium levels without too many trips to the loo.

Yes—our bodies can’t produce magnesium and lots of adults are deficient.

The European NRV is 375mg. Each Magnesium⁺ capsule contains 150mg of elemental (active) magnesium sourced from magnesium glycinate. So, a single serving (2 capsules) of Magnesium⁺ delivers 300mg of elemental magnesium, providing 80% of your recommended daily intake. Sorted.

Magnesium⁺ supports over 300 of your body’s biochemical functions, keeping your engines running around the clock. So you can take it at any time of of day, with or without food. Since magnesium is known for its relaxing, calming properties, some people prefer to take it before bed.

Like a lot of good things in life, Magnesium⁺ is a long-term commitment rather than a quick fix. But even if you don’t feel the difference immediately, that mineral powerhouse is getting to work behind the scenes. 

Playing a key role in over 300 of your body’s biochemical functions, magnesium contributes to your sleep, energy, muscle function and recovery, psychological function, nervous system, bones and teeth, and cell division.

Make it a daily habit, and Magnesium⁺ will continue to support your overall health. You might even notice the benefits our reviewers describe.

Absolutely. All our formulas are designed to work together. 


Magnesium⁺ & Vitals⁺

Recharge and balance your nutritional profile. Research suggests magnesium has an effect on vitamin D function too.


Magnesium⁺ & Biotic⁺

Support your overall wellbeing and give your gut some TLC. Our formula uses magnesium glycinate, which is known to be gentle on your digestive system. 


Magnesium⁺, Vitals⁺ & Biotic⁺

The complete package to cover all your bases.

4.7
Rated 4.7 out of 5 stars
Based on 1,941 reviews
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1,941 reviews
  • Sally
    I recommend this product
    Rated 5 out of 5 stars
    4 minutes ago
    5 Stars

    Brilliant.

    Was this helpful?
  • Sharon
    I recommend this product
    Rated 5 out of 5 stars
    11 hours ago
    5 Stars

    Fab

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  • Katie
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    Feeling calmer

    Myself and my daughter have both felt a noticeable difference taking your Magnesium supplement. We both feeling calmer and are sleeping well.

    Was this helpful?
  • MR
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    5 stars

    5 stars

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  • Samuel H.
    Flag of United Kingdom
    Verified Buyer
    I recommend this product
    Age Range 35 - 44
    Wellness concern Focus, Immune Health, General Wellbeing
    Had you tried a different Magnesium supplement before trying this? Yes
    Rated 5 out of 5 stars
    Yesterday
    Works for me

    I've been taking heights for two years now and its made a big difference to my health. Even though the family has caught the colds and viruses going around I've not been ill at all since taking these tablets.

    ResultsRated 5.0 on a scale of 1 to 5
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