Thorne vs Pure Encapsulations Magnesium Glycinate (2026)

Pure Encapsulations, for most buyers, on the current numbers. It scores 86 to Thorne's 79 on our execution score, and two of its capsules give you 240mg of elemental magnesium for about $0.52 against Thorne's $0.87 for 200mg, so it is meaningfully cheaper at a comparable dose. Its hypoallergenic formulation, which excludes wheat, gluten, eggs, peanuts, and artificial additives, is the other reason to prefer it. Thorne wins on one thing that is decisive for a small group: it is NSF Certified for Sport, so it is the pick if you are subject to drug testing. Both are genuinely practitioner-grade; the gap is price, not quality.

That number is almost certainly not what you want, and the reason is the label convention rather than the products. A '500mg magnesium glycinate' capsule refers to the weight of the whole compound, and magnesium glycinate is only about 14% elemental magnesium by weight, so 500mg of compound delivers roughly 70mg of the magnesium your dose is actually measured in. Both products here label the honest way: Thorne states 200mg of elemental magnesium per serving, Pure Encapsulations states 120mg per capsule. If you saw 500mg on a competing bottle and assumed it was the stronger product, it is usually the weaker one per capsule. Read our breakdown of what the big number on a magnesium label actually means before comparing prices across brands.

Pure Encapsulations, by roughly half, once you match the dose rather than the serving. Thorne is about $0.87 for 200mg of elemental magnesium. Pure Encapsulations is about $0.26 per 120mg capsule, so two capsules give you 240mg, more than Thorne's serving, for about $0.52. This is the comparison that matters and it is easy to get backwards, because Thorne's single serving looks simpler than taking two capsules. Note the serving-count trade-off is real in the other direction: Pure Encapsulations needs two capsules where Thorne needs one scoop, which is why Thorne still scores higher on our dosing-and-form pillar even as it loses the overall matchup on value.

Functionally nothing. 'Bisglycinate' and 'glycinate' refer to the same chelated form of magnesium bound to two glycine molecules. Thorne uses the 'bisglycinate' name; Pure Encapsulations uses 'glycinate.' Both products deliver the same well-absorbed, GI-friendly form that clinical research supports for sleep, muscle function, and blood pressure.

Only if you have specific sensitivities. For buyers with food allergies, autoimmune conditions, or mast cell issues, excluding wheat, gluten, eggs, peanuts, and artificial additives matters significantly. For buyers without those concerns, hypoallergenic specification does not translate into a functional benefit, it is a defensive formulation choice, not a performance upgrade.

Clinical research supports 200-400mg of elemental magnesium per day for sleep, muscle comfort, and blood pressure support. The two products get you there differently: Thorne is a powder delivering a full 200mg of elemental magnesium in one scoop, while Pure Encapsulations is 120mg per capsule, so two capsules give you 240mg and three reach 360mg. That difference is also where the cost gap comes from, since a 240mg two-capsule day of Pure Encapsulations runs about $0.52 against Thorne's $0.87 for 200mg. Glycinate is much better tolerated than oxide or citrate, which cause GI effects at lower doses.

Yes, and one of them carries a product-specific seal. Thorne Magnesium Bisglycinate is individually listed as NSF Certified for Sport, which is a check on this exact product rather than on the brand's lineup generally, and it is the strongest independent assurance in this matchup. Pure Encapsulations is tested by Eurofins/Silliker for identity, potency, and contaminants, and its facilities carry third-party GMP certification, but this product does not carry an NSF or USP seal of its own. If a product-level seal is your deciding factor, Thorne has it and the roughly 2x price at a matched dose is what it costs.