Find the Best Supplements, Backed by Evidence
Independent, evidence-based reviews of supplements available in the UK. We research, compare, and rank so you can make informed choices.
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Independent, evidence-based rankings of the supplements that matter most. Start with our flagship magnesium investigation.
Best Magnesium UK
Flagship · Lab TestedOur flagship investigation. We lab-tested 8 popular UK magnesium supplements and found most 'glycinate' products hide cheap magnesium oxide to inflate their numbers. See which ones are genuine.
View the rankingsTop Magnesium Picks
Our highest-rated magnesium supplements available in the UK right now.
NF Pure Magnesium Glycinate
NF Supplements
NF Pure Magnesium Glycinate is our #1 pick because it does what most competitors won't — use pure glycinate without hiding cheap magnesium oxide in the formula. Every batch is independently lab tested with results scannable via QR code, it's made in Oxford, and the 338mg of elemental magnesium per serving is genuinely absorbable.
Zipvit Magnesium Glycinate 2000mg
Zipvit
Zipvit is the cheapest per gram and delivers close to its claimed dose (384mg vs 400mg claimed), but our lab analysis suggests the formula is buffered with magnesium oxide — meaning the absorption rate may be significantly lower than a pure glycinate product.
British Supplements Clean Genuine Magnesium 1,404mg
British Supplements
British Supplements delivers on its 'clean' promise — no fillers, no oxide, and the maths check out. But at just 140mg of elemental magnesium per serving, the dose is too low to be a practical daily magnesium supplement without taking multiple servings.
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