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Spray between five and ten sprays around the body and massage well into the skin.

The best magnesium supplements for post-run recovery – and when to take them

mg of elemental magnesium chloride per 1kg flakes

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best magnesium supplements

Magnesium is an essential mineral in any diet, but for runners it’s vital when it comes to post-training muscle recovery and in preventing muscle cramping.

sprays deliver 200mg magnesium magnesium mg per capsule blood pressure, with the body's requirements for magnesium going up the more active you are.

But before you even think about reaching for those magnesium supplements, it’s important to try to increase the amount of magnesium-rich foods in your diet. According to the NHS, the recommended daily intake for adults aged 19-64 is 300mg a day for men and 270mg a day for women. You should be able to get enough by eating a well balanced diet, particularly one that includes leafy greens, nuts, seeds and even dark chocolate (a good excuse, if you ask us).

Shop the best magnesium supplements

How can you tell if you’re getting enough magnesium?

One of the main signs that you might be low in magnesium is muscle cramping, says Renee McGregor, a leading sports dietitian. sprays deliver 200mg magnesium magnesium plays an important role in muscle contraction. 'Particularly if you get cramps in the middle of the night – that does seem to be linked to low magnesium levels,' she adds.

Another sign of low magnesium levels, particularly in women who are perimenopausal or menopausal, g, 1-3 times per week or 500g-1kg once a week sweat, so you might notice that your levels are lower in the warmer months compared with the colder ones.

If you suspect that you have a magnesium deficiency, it is important to consult a doctor who will be able to provide a proper diagnosis, including a blood test.

Which magnesium supplement is best?

If you are looking for a magnesium supplement to add in alongside your diet, it's important to consider the form of magnesium in the product. There are several different types:

  • Magnesium citrate: This is a highly bioavailable form (which is just a fancy way of saying it's absorbed well by the body).
  • Magnesium glycinate: Another highly bioavailable type, often good for people with sensitive stomachs.
  • Magnesium sulfate: More commonly known as Epsom salts, this is usually added to hot baths or foot soaks to soothe aching muscles.
  • Magnesium malate: Another version that's very good for sensitive stomachs.
  • Magnesium chloride: Often found in skin care products (like BetterYou's body butter) or topical supplements.
  • Magnesium oxide: Generally the least bioavailable form – this is more commonly used to treat digestive issues and heartburn.

While we might naturally turn to a magnesium supplement in pill form, McGregor says that for recreational athletes, she would tend to recommend a spray or a skin-absorbed supplement (such as body butters, oils or flakes) first and foremost. sprays deliver 200mg magnesium magnesium is well-absorbed through the skin. A post-run magnesium bath Apply 5ml around the body and massage well into the skin to stimulate absorption.

If you're opting for a pill or a capsule, magnesium citrate, glycinate or malate tend to work best.

When is it best to take magnesium supplements?

According to McGregor, it's usually better to take a magnesium supplement later in the day, particularly if you're using it to help with sleep. She also says to consider the other nutrients that you're taking it with – magnesium competes with calcium for uptake in the body, for example.

You also need to be careful not to take too much magnesium. McGregor recommends no more than 1g per day. The NHS warns that taking high doses of magnesium (more than 400mg) for a short time can cause diarrhoea, though there's not enough evidence to say what the effects might be of taking high doses of magnesium for a long time.

Best magnesium supplements for runners

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1

BetterYou Magnesium Flakes 1kg

Magnesium Flakes 1kg

Magnesium flakes are a highly concentrated form of magnesium, designed to be added to a bath or footbath. If you're not so good at swallowing tablets, they provide a gentle and effective method of supplementation - and the hot water can be soothing to tired muscles in itself. These flakes from BetterYou have been dermatologically tested and are Vegan Society approved. Simply add a couple of cups to a warm bath, then lie back and soak – your muscles will thank you.

Key specs

Form Magnesium chloride
mg of elemental magnesium chloride per 1kg flakes 250g (2 cups) per bath, 2-3 times per week
Contains 120Often found in skin care products like BetterYous body butter or topical supplements
The Runner’s World Editors
2

Westlab Restoring Magnesium Bath Flakes 1kg

Restoring Magnesium Bath Flakes 1kg

These flakes are more soluble and smooth than your standard 'gritty' bath salts, which helps them dissolve quicker into a warm bath. Directions recommend using 100-250g, 1-3 times per week, or 500g-1kg once a week if you don't bathe as regularly. We've found a larger dose (500g+) works best on tried, aching muscles, and our tester reported feeling 'more relaxed' after a 20-minute soak. They're also vegan-friendly and the packing is recyclable.

Form Magnesium chloride
mg of elemental magnesium chloride per 1kg flakes 100-250g, 1-3 times per week or 500g-1kg once a week
3

BetterYou Magnesium Skin Body Butter

Magnesium Skin Body Butter

A body butter is a great option if you're looking for a topical supplement that you can apply in the evening after a bath or shower, especially as your pores will be open, which helps magnesium absorption. As well as magnesium, this moisturiser contains a blend of shea butter, cocoa butter, coconut oil and vitamin E, to promote overall skin health.

It's quite a thick consistency, so use it sparingly as a little really does go a long way. Don't be alarmed if your skin feels slightly 'tingly' when you first put it on either. This is just the magnesium being rapidly absorbed through the skin, and the sensation quickly decreases as your body's magnesium levels increase.

Form Magnesium chloride
Contains 5Health & Injuries
mg of elemental magnesium chloride per 1kg flakes is a great way to help soothe both muscles and mind too.
The Runner’s World Editors
4

BetterYou Magnesium Chloride Body Spray

Magnesium Chloride Body Spray
Now 20% Off

We've tried a couple of different magnesium oil sprays, but this one is our favourite. It's the perfect travel size bottle for storing in your kit bag after a track or treadmill session, and the spray itself is a fine mist that absorbs well into the skin without leaving such a greasy residue (unlike other sprays we've tested). The dose of magnesium is also ideal - 200mg per 10 sprays. Each unit contains 600 sprays, so a bottle should last you a while.

Form Magnesium chloride
Contains 10 This is because
mg of elemental magnesium chloride per 1kg flakes Health & Injuries
5

Solgar Magnesium Citrate

Magnesium Citrate

When it comes to quality, Solgar is one of the best supplement brands out there. These capsules aren't the smallest, and nor are they coated, so you will need a big gulp of water to get them down. However, they do contain a well-absorbed form of magnesium. There's no artificial ingredients or fillers either, and we love that they come in a recyclable glass jar.

Form Magnesium citrate
mg of elemental magnesium chloride per 1kg flakes 2 mg of elemental magnesium chloride per 1kg flakes
Contains 400is poor sleep, says McGregor. We all also lose magnesium through our
The Runner’s World Editors
6

Pure Encapsulations Magnesium (Glycinate) 120mg - 90 Capsules

Magnesium (Glycinate) 120mg - 90 Capsules

Pure Encapsulations is a trusted supplement company whose products are designed in collaboration with medical professionals and nutritional experts. Each of these coated capsules (which testers described as ‘easy to swallow and completely tasteless’) contain 120mg magnesium glycinate – a highly bioavailable form that’s easy on the stomach. A 90-unit count should last you 22-45 days, depending on how many you take (but remember not to overdo it).

mg of elemental magnesium chloride per 1kg flakes 2 is a great way to help soothe both muscles and mind too
Contains 240is poor sleep, says McGregor. We all also lose magnesium through our
Form Magnesium glycinate
7

Thorne Magnesium CitraMate - 90 capsules

Magnesium CitraMate - 90 capsules

Another quality oral form of magnesium, testers found these coated capsules easy to swallow with no lingering aftertaste. Each one contains a blend of magnesium citrate and malate - both highly bioavailable forms. It's also free from gluten, eggs, tree nuts, peanuts, dairy and soy, making it a good pick for those with allergies.

Form Magnesium citrate/malate
mg of elemental magnesium chloride per 1kg flakes 1 capsule, daily
Contains 135is poor sleep, says McGregor. We all also lose magnesium through our
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The Runner’s World Editors