8 Best Magnesium Supplements UK 2026: For Sleep, Stress and Muscle Recovery

This is the one I genuinely keep going back to.Nutrition Geeks' 3-in-1delivers 1800mg of magnesium compounds per two-capsule serving, split across bisglycinate, citrate and malate, which gives you 384mg of elemental magnesium in one go. That hits almost exactly 100% of the daily reference value, and because it's a blend you're covering sleep, muscle and energy support in one capsule.The capsules are vegan, UK-made, and I've had no digestive upset on them at all. I take two about forty minutes before bed and by the time my head hits the pillow I can feel my shoulders unclenching. At around £22 for a 45-day supply it works out at about 50p a day, which honestly feels like a steal for something that's genuinely improved my sleep quality.Best for:All-round coverage on a budget. The blend format means you don't need to pick just one form.

A Which? Best Buy in 2025 and still one of the most popular picks on Amazon UK in 2026.Nutravita's 5-in-1stacks bisglycinate, citrate, malate, oxide and ascorbate into 240 capsules for roughly £18, which is genuinely great value. You get 400mg of elemental magnesium per serving, well over the daily target, so you can split the dose across morning and evening if you want to avoid a single hit.Bootssells Nutravita too, so you can often pick it up on a three-for-two if you're layering multiple Nutravita vitamins. I find the capsules slightly larger than the Nutrition Geeks ones, but still manageable with a full glass of water.Best for:Maximum forms at the lowest price. Ideal if you want the widest coverage without thinking too hard about it.

If you want a premium, single-form glycinate from a brand with a properly clean label, this is it.Bare Biologyis best known for their omega-3s and their magnesium holds the same quality bar.Ready and Restedgives you 125mg of elemental magnesium per capsule, so three capsules gets you to a full 375mg daily dose.It's pricier than the others at around £32 for a 60-day supply at minimum dose, but the packaging is lovely, the quality control is excellent, and you get a proper ingredients label with zero filler nonsense. My pick if budget isn't your first concern and you want something you'd happily leave out on the bedside table.Best for:Premium-seekers who want a clean, single-form glycinate with beautiful branding to match.

Vitabioticsis as British as Radox bubble bath and this is the supermarket aisle pick. Two tablets give you 375mg of elemental magnesium, which is 100% of the daily reference value, for around £6. That's brilliant value if you just want a reliable, high-street option to sit in the cupboard next to your multivitamin.The form here is primarily magnesium oxide, so the bioavailability isn't as good as a glycinate, but the dose is high enough to compensate. If you've never taken magnesium before and want to test the waters without committing £30, start here. Easy to swallow and gentle on an empty stomach in my experience.Best for:Absolute beginners and anyone who wants a cheap, no-fuss entry point from Boots or Superdrug.

Solgarhas been knocking around the health food shop scene since the 1940s and the quality shows. Theirmagnesium citrategives you 200mg of elemental magnesium per two tablets, the tablets are vegan and free from the usual allergens, and it's one of the most recommended citrates by nutritionists in the UK.I'd pick this specifically if your sleep is fine but your digestion is sluggish, because citrate draws water into the bowel and can help things move along. I take it in the morning rather than at night for that reason. A 120-tablet pot lasts roughly two months at the recommended dose.Best for:Digestion support. If you want a well-absorbed citrate from a trusted, heritage brand.

The gentler Solgar option.Chelated magnesiumis magnesium bound to amino acids, which means it's absorbed better and less likely to cause digestive grumbles than oxide or citrate. You get 100mg of elemental magnesium per tablet, so four a day takes you to 400mg if you want the full whack.This is my pick for anyone with a sensitive stomach, or if you've tried magnesium before and it didn't agree with you. I also think it's a nice pick for anyone in perimenopause or managing anxiety, because the slow, steady delivery feels very different to a single big dose.Best for:Sensitive stomachs and anyone who has struggled with digestive side effects from other magnesium forms.

This is the one that lives on my bedside table.BetterYou'sSleep spraycombines transdermal magnesium chloride with lavender, chamomile and bergamot essential oils, and I've genuinely found it helpful on the nights my brain won't switch off. I do ten sprays on my calves and the soles of my feet before I get into bed.Is the absorption as robust as an oral glycinate? Probably not, and I want to be honest about that. But the ritual itself is calming, the scent is beautiful without being overpowering, and it doubles as a post-Pilates leg rub when my quads are screaming. Great as a layered addition to an oral supplement, rather than a replacement for one.Best for:A calming bedtime ritual alongside your oral supplement. Also lovely for post-workout muscle relief.

A softer alternative to the spray if you find straight magnesium oil a bit tingly on the skin. This lotion layers magnesium chloride with shea butter, cocoa butter, coconut oil and vitamin E, so it's essentially a moisturiser that happens to deliver magnesium. I use it on my legs after a hot bath or post-workout, and it disappears into the skin rather than sitting on top.The tingle you sometimes get from magnesium spray is much reduced here because of the oils, which makes it nicer for anyone with sensitive or dry skin. Not a replacement for an oral capsule, but a genuinely lovely part of a wind-down routine, especially in winter when your skin wants extra hydration anyway.Best for:Sensitive skin that can't handle the tingle of straight magnesium spray. A hydrating wind-down ritual.