Ingredient face-off
Best Magnesium Supplements Compared: Glycinate vs Citrate vs Threonate vs Malate
Magnesium is the #1 mineral supplement by search volume — but the form (glycinate vs citrate vs threonate vs malate vs oxide) determines both bioavailability and use-case fit, and "magnesium" on a label can mean any of a dozen things. This head-to-head ranks the top-scoring magnesium supplements in the Vyvata catalog on Evidence (RCT support for the specific form), Formulation (elemental magnesium content, bioavailability), Manufacturing (third-party testing), and Transparency (dose disclosure). Read the rubric →
Head-to-head summary
| # | Product | Score | Tier | Strongest on |
|---|---|---|---|---|
| 1 | Thorne Magnesium Bisglycinate — Thorne | 81 | Verified | Formulation + Manufacturing |
| 2 | Pure Encapsulations Magnesium (Glycinate) — Pure Encapsulations | 80 | Verified | Formulation + Safety |
| 3 | Pure Encapsulations Magnesium Glycinate 120 Mg, 90 Capsules — Pure Encapsulations | 78 | Verified | Manufacturing + Evidence |
| 4 | Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism* - with Magnesium Glycinate - 180 Capsules — Pure Encapsulations | 76 | Verified | Manufacturing + Safety |
| 5 | Mellö Magnesium - 10 Travel Sticks — Foria | 74 | Verified | Formulation + Evidence |
| 6 | Mellö Magnesium Pouch — Foria | 74 | Verified | Formulation + Evidence |
| 7 | Doctor's Best High Absorption Magnesium — Doctor's Best | 72 | Verified | Formulation + Safety |
| 8 | Now Magnesium Glycinate 180 Tablets: Highly Absorbable Magnesium Supplement for Sleep — NOW | 70 | Verified | Evidence + Formulation |
Top score: Thorne Magnesium Bisglycinate at 81/100 — see the deep-dive for the reasoning.
Per-product deep dive
#1 Thorne Magnesium Bisglycinate81/100 · Verified
Bisglycinate chelate powder allows flexible dosing to hit the ~200-400 mg elemental RCT window (Boyle et al. 2017 meta on Mg and mood). Thorne runs its own in-house cGMP labs with additional third-party verification and is NSF Certified for Sport on many SKUs. Clean, unflavored, no sweeteners. Verified at the strong end.
#2 Pure Encapsulations Magnesium (Glycinate)80/100 · Verified
Magnesium bisglycinate chelate at 120 mg elemental per cap — one of the best-tolerated and better-absorbed forms per crossover data (Walker et al. 2003; Schuchardt & Hahn 2017). Hypoallergenic Pure Encapsulations manufacturing with CoAs. Would need 2-3 caps to hit RCT doses, but the form and label quality earn a strong Verified.
See the full Pure Encapsulations Magnesium (Glycinate) page →
#3 Pure Encapsulations Magnesium Glycinate 120 Mg, 90 Capsules78/100 · Verified
Pure Encapsulations is a Nestle/Atrium Innovations brand with NSF and GMP certification and hypoallergenic/gluten-free formulation standards — the reference anchor for pharmacy-grade single-ingredient supplements. Magnesium glycinate is the highly bioavailable, low-GI-disturbance form (Walker 2003). 120 mg is on the low end (RDA ~320-420 mg) — appropriate for gentle daily supplementation, so no sub-therapeutic auto-fail, but higher-dose forms would score even better.
See the full Pure Encapsulations Magnesium Glycinate 120 Mg, 90 Capsules page →
#4 Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism* - with Magnesium Glycinate - 180 Capsules76/100 · Verified
Pure Encapsulations magnesium glycinate 180-count, resold via NutritionAdvice. Pure Encaps is a hypoallergenic, cGMP, third-party tested practitioner brand (anchor Verified 78). Magnesium bisglycinate has strong sleep/stress evidence (Boyle 2017 meta-analysis: 320-500mg/day). Slight ding for third-party reseller vs first-party Pure Encaps.
#5 Mellö Magnesium - 10 Travel Sticks74/100 · Verified
Three bioavailable magnesium forms (glycinate, lactate-gluconate, Aquamin) with GABA and L-theanine, ~325 mg elemental Mg per serving. Magnesium glycinate has RCT support for sleep quality (Abbasi 2012), L-theanine 200 mg supports subjective calm (Kim 2019). Foria is an established brand with third-party COAs. Deducted for GABA's questionable oral CNS absorption and mid-tier stress evidence.
#6 Mellö Magnesium Pouch74/100 · Verified
Same Mellö formula in bulk pouch: three magnesium forms + GABA + L-theanine. Mg glycinate for sleep (Abbasi 2012) and L-theanine for calm (Kim 2019) are well-supported at label doses. Foria posts third-party COAs; sustainability trimmed slightly for single-material sachets in the travel-stick line.
#7 Doctor's Best High Absorption Magnesium72/100 · Verified
100 mg elemental magnesium as Albion TRAACS glycinate/lysinate chelate, not buffered with oxide. Glycinate chelate is one of the better-absorbed forms per Walker 2003, and TRAACS is the well-characterized branded chelate. No oxide buffering is a real formulation win. GMP-compliant but no NSF/USP. Verified — the formulation quality carries it despite mid-tier manufacturing verification.
#8 Now Magnesium Glycinate 180 Tablets: Highly Absorbable Magnesium Supplement for Sleep70/100 · Verified
Magnesium bisglycinate — the bioavailable chelated form with the best GI tolerability (Schuette 1994; Walker 2003). Solid evidence for sleep, muscle relaxation and mild anxiety (Boyle 2017 review; Abbasi 2012 elderly insomnia RCT). NOW Foods manufacturing is transparent and GMP-certified; only knock is being sold here through a reseller rather than direct.
How the scoring works
Every product is scored on six dimensions — evidence (RCT quality supporting the active ingredients at the label dose), formulation (dose adequacy, bioavailability form, redundancy), manufacturing (third-party testing, GMP, facility audits), safety (adverse-event profile, interactions, dose ceiling), transparency (dose disclosure vs proprietary blends, honest marketing), and sustainability (sourcing, packaging, corporate practice). Tier thresholds: Elite 85+, Verified 70–84, Standard 50–69, Rejected 0–49. Rejected products stay listed with reasons. Full rubric →