Independent supplement ratingsUS and Canada · Updated weekly
A ratings desk for a category that has spent thirty years grading its own homework.
A ratings desk for a category that has spent thirty years grading its own homework.
Glycinate · 180 capsules
120mg elemental / 200–400mg studied
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A clean, hypoallergenic glycinate from a brand clinicians trust — held back by dose and price. Pure Encapsulations makes genuinely tidy products with no unnecessary fillers, but this one lands at 120 mg of elemental magnesium per capsule, below the 200 mg most trials use, at about $0.26 a serving. You either take two capsules — pushing the real cost up — or accept a light dose.
120 mg elemental magnesium as glycinate per capsule, clearly labelled, with minimal excipients. Nothing wrong with what's in it; there's simply less magnesium per capsule than the leaders, so the effective cost to reach a studied dose is higher than the sticker price suggests.
Worth the premium if you react to fillers and want a hypoallergenic label, and you don't mind taking two capsules. For most people chasing a studied dose at a fair price, Thorne or Doctor's Best get there more directly.
Reviewed and fact-checked by the NFS editorial team · Last updated 12 Jul 2026