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Magnesium deficiency is one of the most consistent findings in our patient blood panels, yet it is one of the simplest gaps to address. We favour Pure Encapsulations here because the glycinate form sits at the better-absorbed, better-tolerated end of the market, and the brand's commitment to clean, minimal formulations means we can recommend it with confidence to patients who are sensitive to fillers and additives.
About this product
Magnesium (glycinate)
Pure Encapsulations Magnesium Glycinate is a chelated magnesium supplement in which the mineral is bound to the amino acid glycine. This form is chosen specifically because chelated magnesium tends to be better tolerated and more readily absorbed than oxide or sulphate forms, making it a practical option for people who have found cheaper magnesium products cause digestive discomfort or simply do not work.
Magnesium is a cofactor in hundreds of enzymatic processes, including those involved in muscle contraction and relaxation, nerve signal transmission, and the regulation of sleep-wake cycles. Low magnesium status is common — poor diet, high stress, alcohol, and intense exercise training all deplete it — and is frequently identified in blood work before any obvious symptoms appear.
This supplement suits people managing muscle tension or cramps, those with disrupted sleep who want to address a potential nutritional gap, and athletes in heavy training who lose magnesium through sweat. It fits naturally into an evening routine, as glycine itself may support relaxation and sleep quality.
Pure Encapsulations is a brand with a longstanding focus on clean formulations — minimal excipients, no unnecessary additives — which is why it is a frequent choice among clinicians who want straightforward, reliable supplementation without confounding ingredients. As with all magnesium supplements, individual response varies and blood testing remains the most accurate way to establish whether supplementation is warranted.
What it does
Benefits
- 01
Chelated form for improved tolerability and absorption
- 02
May support muscle relaxation and ease cramping
- 03
Studied to support sleep quality via glycine pathway
- 04
Suits those with confirmed or suspected low magnesium status
- 05
Minimal excipients — a clean formulation for sensitive users
Get the most from it
How to use
Follow the dosage on the packaging. The typical starting point for this category is one to two capsules daily, and many people take magnesium in the evening with a meal to support relaxation and minimise any chance of digestive sensitivity.
What's inside
Ingredients
View full ingredient list
Magnesium (as Glycinate)
Common questions
Frequently asked
Why choose glycinate over other forms of magnesium?
Magnesium glycinate is a chelated form, meaning the mineral is bound to an amino acid, which generally improves absorption and reduces the laxative effect associated with magnesium oxide or citrate at higher doses. It is a sensible choice if you have experienced digestive discomfort with other forms.
How long before I notice a difference?
For sleep and muscle tension, many people notice a modest difference within one to two weeks of consistent use. Correcting a genuine deficiency identified on a blood test can take four to eight weeks of regular supplementation, though this varies considerably between individuals.
Is it safe to take with other supplements or medications?
Magnesium can interact with certain antibiotics, bisphosphonates, and medications for blood pressure or diabetes — spacing doses apart or seeking medical advice is sensible if you are on prescription medication. If you are unsure, check with your GP or a pharmacist before starting.
Who should be cautious about taking magnesium supplements?
People with kidney disease should not supplement magnesium without medical supervision, as impaired kidneys cannot clear excess magnesium efficiently. Healthy adults at normal doses are unlikely to experience issues, but it is always worth checking the packaging for contraindications.
Should I get a blood test before taking this?
It is not essential, but it is the most accurate way to know whether supplementation is actually needed. A serum or red blood cell magnesium test can identify a deficit that might not yet be causing obvious symptoms, and allows you to track whether your levels are improving over time.
Doctor-guided care
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Bloods are the only way to know what your body actually needs. We'll tell you which of these supplements earn their place.
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