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Magnesium⁺

4.7
Rated 4.7 out of 5 stars
4.7 Stars (1,258 Reviews)

A clean, gentle magnesium 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.

2 capsules • 30-day supply

See ingredients

Free shipping in the UK

30-day money-back guarantee

  • 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.

Bundle & save Up to 20% off

Monthly savings when you cover your bases.

Ultimate Health Trio Ultimate Health Trio
20 key nutrients, 20bn CFU and 300mg of magnesium
$162
Biotic⁺ Biotic⁺
7 high-impact bacteria strains + zinc, proven to go further
$77

  • GLUTEN

  • GMOs

  • DAIRY

  • ANIMAL BY-PRODUCTS

  • FILLERS

  • ALLERGENS

  • CONTAMINANTS

  • ADDITIVES

  • TOXINS

  • HEAVY METALS

3 reasons you need Magnesium⁺

Get the sleep you’ve been dreaming of

Tossing and turning? Magnesium⁺ helps you fall asleep faster, stay asleep longer, and wake up truly refreshed.

300+ reasons why

You can’t make it, but you need it for everything—from muscle recovery to nervous system support. Don’t run on empty.

Free from everything

No fillers, no nasties—just pure, highly absorbable magnesium glycinate. Better sleep and energy, nothing extra.

Better than all the rest

Highest-quality magnesium glycinate

Potent & effective dose

Gentle on your gut

Free from bulking agents and fillers

Third-party testing on every batch to ensure quality

Made in the UK

300mg elemental magnesium
Standard magnesium
200mg elemental magnesium

The benefits

Feel calmer

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

Look after your mental health

Contributes to normal psychological function so you can feel your best.

Sharpen your focus

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

Fuel your workouts

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

Boost your performance

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

Stay energised

Promotes normal energy metabolism so you can keep going.

Rest & recover

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

Did you know?

Modern farming has depleted 30% of magnesium from soil, and processed foods lose up to 90%—making it harder to get what you need from your diet.

If you’re feeling tired, run-down, or struggling with sleep, your body might be telling you it needs more.

Formulated by experts

We develop and update our formulas based on the latest research, working with leading experts in nutrition, dietetics, and neuroscience.

Made by real experts, for real life change.

Dr. Tara Swart

MD, PhD

Science Advisor | MIT Sloan
Sophie Medlin

RD
Head of Nutritional Research | City Dietitians
Dr. Harry Jarrett

PhD, MRSB

Director of Science & Research | Heights
Oliver Patrick

Physiologist

Chief Wellbeing Officer | Heights
Professor Mary Ward

PhD, RD, BSc

Professor of Nutrition and Dietetics | Ulster University
Professor Andy Jones

BSc, PhD, DSC

Professor of Applied Physiology | University of Exeter
Dr. Agata Sobczynska-Malefora

PhD, MSc, FRSC, CChem, CSci
Consultant Clinical Scientist & Honorary Senior Clinical Lecturer / Synnovis, St Thomas' Hospital
Professor Shumone Ray

MBBS (Hons), MPH, MD, DNHE, RNutr
Professor of Global Nutrition & NNEdPro Chief Scientist 
Professor Anne-Marie Minihane

PhD, BSc
Professor of Nutrigenetics| UEA Medical School

Trusted by 150,000+ customers

Stephen Fry Actor, Comedian, Author

I hope I'm smart enough to know that excessive claims are silly, but I can certainly say with all truth that taking Heights has coincided with me feeling uncommonly fresh, perky, and lively in the mind. I'm a huge fan of it!

Spencer Matthews Entrepreneur & British TV personality

I took Magnesium⁺ in the evening after each marathon to aid my sleep and recovery. The difference in my energy, sleep quality, and mental focus has been incredible. I honestly felt stronger and more resilient every day.

Tasha Ghouri Dancer, author, model & TV personality

This has been a game-changer for my energy. I had no idea one ingredient could make such a difference to my life. This has been supporting my sleep, energy, recovery, focus—all things I was missing.

Ben Alldis Peloton Instructor, Athlete, Coach

When I started taking Magnesium⁺ before bed, I felt a real difference in my sleep and recovery. I’ve tried it all, and this is the first thing that's worked for me.

Renée Elliott Founder of Planet Organic

One thing I know is high quality supplements, as I've been selecting only the best for our stores from the start. Heights is so good I've bought 5 subscriptions - my family are all fans and you should be too.

Leanne Hainsby-Alldis Peloton Instructor, Dancer & Fitness Enthusiast

I used to struggle with sleep, but not anymore. I recover faster and feel more energised—which is crucial for me as a fitness instructor.

Frequently asked questions

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 1,258 reviews
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1,258 reviews
  • Lee
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    21 seconds ago
    Focus and Refreshed

    The Heights Magnesium provides the perfect dose to allow for a full physical and mental reset on a daily basis. You don’t realise its impact until you start taking it.

    Was this helpful?
  • Robert
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 hour ago
    Better Sleep

    …and also have the impression that muscle recovery improved 💪

    Was this helpful?
  • Samuel
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 hours ago
    5 stars

    5 stars

    Was this helpful?
  • Nichola
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 hours ago
    2-3 months in

    Really feeling the benefits of this supplement - sleep is better and feeling I'm back to exercise more often and for longer r

    Was this helpful?
  • Miss
    Verified Buyer
    Rated 3 out of 5 stars
    4 hours ago
    3 stars

    3 stars

    Was this helpful?
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