PURE Encapsulations

Magnesium Powder

Pure Encapsulations Magnesium Powder is a magnesium citrate supplement in loose powder form.

£35

1
Delivery includedArrives in 1 to 3 days30-day returns
PURE EncapsulationsMagnesium Powder
£351

Pure Encapsulations Magnesium Powder is a magnesium citrate supplement in loose powder form.

Why we love it

Pure Encapsulations Magnesium Powder is a magnesium citrate supplement in loose powder form. Magnesium citrate is a well-absorbed organic form of magnesium, generally regarded as more bioavailable than inorganic options such as magnesium oxide.

  • Magnesium citrate for well-absorbed daily supplementation
  • Flexible powder format allows easy dose adjustment
  • Single-ingredient formula with no unnecessary additives

Good to know

  • A food supplement. Do not take more than the dose on the label.
  • Not a substitute for a varied, balanced diet and a healthy lifestyle.
  • Check with your doctor first if you are pregnant, breastfeeding, taking medication or under medical care.
  • Keep out of the reach of young children.
How to use

Mix 1 teaspoon into water or a drink of your choice once daily. Many people find it most useful taken in the evening, as magnesium is often used to support wind-down and sleep. Take with food if you find it causes digestive discomfort on an empty stomach.

More about it

Pure Encapsulations Magnesium Powder is a magnesium citrate supplement in loose powder form. Magnesium citrate is a well-absorbed organic form of magnesium, generally regarded as more bioavailable than inorganic options such as magnesium oxide. The mineral is involved in over 300 enzymatic processes in the body, including muscle contraction and relaxation, nerve transmission, and the regulation of sleep-wake cycles.

This format suits people who prefer to avoid capsules, need flexible dose adjustments, or find powder easier to incorporate into a daily routine - stirred into water, a smoothie, or a warm drink before bed. It is a practical choice for those with confirmed low magnesium, athletes in heavy training, individuals with disrupted sleep, or anyone whose diet is consistently low in magnesium-rich foods.

Magnesium is also commonly used alongside other sleep or recovery protocols, and the powder format makes it straightforward to titrate up or down depending on tolerance and individual response.

Pure Encapsulations is a professional-grade supplement brand with a longstanding reputation in clinical settings for clean, minimally formulated products. This single-ingredient powder reflects that ethos: magnesium citrate and nothing extraneous. For those who have had low magnesium confirmed via blood test, or whose clinician has recommended supplementation, this is a considered and practical option.

Delivery and returns

Standard UK delivery included on every order, 1 to 3 working days after dispatch.

Next working day for £25 when you order by 12pm. Orders placed before 12pm on a working day leave the same day. Later orders leave the next working day.

You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. Read the delivery and returns terms

or call 020 3951 3429

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Your questions

How does magnesium citrate differ from other forms of magnesium?

Magnesium citrate is an organic salt of magnesium that is generally considered more bioavailable than inorganic forms like magnesium oxide. It is a common first choice when the goal is reliable absorption. Other forms such as magnesium glycinate are sometimes preferred specifically for sleep or if citrate causes loose stools.

Can this help with sleep?

Magnesium is studied for its role in supporting sleep quality, likely through its involvement in the regulation of the nervous system and melatonin pathways. It is not a sedative, but many people report improved sleep onset and quality when correcting a deficiency. Results vary and are most pronounced in those who are genuinely low in magnesium.

Is this suitable if I have a sensitive stomach?

Magnesium citrate can have a mild laxative effect at higher doses, which is worth noting if your digestion is sensitive. Taking it with food may reduce this. If it causes persistent discomfort, speak to your clinician about whether a different form — such as magnesium glycinate — might suit you better.

Who should avoid magnesium supplementation?

People with kidney disease or impaired renal function should not supplement magnesium without medical supervision, as the kidneys regulate magnesium excretion. Magnesium can also interact with certain medications, including some antibiotics and bisphosphonates. Check with your GP or pharmacist if you are on regular medication.

How long before I notice a difference?

This depends on how deficient you are to begin with. Some people notice improvements in sleep or muscle tension within one to two weeks; for others it takes longer. A blood test before and after supplementation is the most reliable way to track whether your levels are responding.

In their words

Overall

4.927 reflections
1 to 6 of 27 reflections
SK

Finally sleeping through the night

6 months ago

Been taking this stirred into warm water about an hour before bed for the past few weeks. I was sceptical at first but my sleep has noticeably improved — I'm waking up less and falling back asleep more easily. Clean ingredients, no fillers, dissolves well. Will be reordering.

T

Solid product

6 months ago

Does exactly what it says. Mixes easily into water, no gritty texture. Takes the edge off muscle tightness after long runs.

NB

Good quality but the tub is smaller than I expected

6 months ago

The powder itself is great — I've noticed a real difference in my sleep and my legs aren't cramping as much after cycling sessions. Only gripe is the container doesn't last as long as I'd hoped at the recommended dose. Worth the price but I'd like a larger size option.

MT

Recommended by my GP, very happy

6 months ago

Blood test came back showing low magnesium so my doctor pointed me towards supplementation. Been using this for about six weeks now. No complaints — clean formula, no additives, easy to add to my morning smoothie.

PM

7 months ago

Switched from capsules because I struggle to swallow them. The powder format is a much better fit for me and it seems to work just as well. Mix it into oat milk before bed.

JW

Proper quality supplement

7 months ago

I've tried a few different magnesium products over the years and this one stands out for its simplicity. No unnecessary extras, just the thing itself. I take it in the evening and sleep is definitely more settled. Reassured by the brand's reputation too.

Pairs well with

  1. PURE Encapsulations Magnesium PowderPURE EncapsulationsMagnesium Powder£35
  2. Hunter & Gather 100% Coconut MCT OilHunter & Gather100% Coconut MCT Oil£20
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