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Doctor's Best vs Thorne Magnesium Glycinate (2026)
Disclosure: We earn commissions on purchases made through our links. This never influences our scores. Editorial policy
The Verdict
Doctor's Best is our value pick and scores higher overall (90 vs 81 on our 0-100 execution score), largely because Thorne's high price drags its value pillar down. Doctor's Best costs about $0.17 per day versus Thorne's $0.72 - roughly 4x cheaper for the same 200mg elemental dose and glycinate form. Thorne's advantage is NSF Certified for Sport, which matters for drug-tested athletes. In our view, if you are not subject to sport testing, Doctor's Best delivers the same well-absorbed magnesium at a fraction of the cost; if you need NSF Certified for Sport specifically, Thorne is the pick.
Doctor's Best High Absorption Magnesium Glycinate Lysinate
Doctor's Best
Thorne Magnesium Bisglycinate
Thorne
Head-to-Head Comparison
| Category | Doctor's Best High Absorption Magnesium Glycinate Lysinate Doctor's Best | Thorne Magnesium Bisglycinate Thorne |
|---|---|---|
| Brand Score | 90/100Winner | 81/100 |
| Dosing & Form | 25/25Winner | 25/25 |
| Purity | 20/25 | 23/25Winner |
| Value | 22/25Winner | 10/25 |
| Transparency | 23/25Winner | 23/25 |
| Cost/Day | $0.17Winner | $0.72 |
| Dose/Serving | 200mg | 200mg |
| Form | magnesium bisglycinate chelate (Albion TRAACS) | magnesium bisglycinate chelate |
| Third-Party Tested | ✓ Yes | ✓ Yes |
| Proprietary Blend | No | No |
Why This Comparison Matters
Doctor's Best and Thorne both make well-absorbed glycinate-form magnesium, but they target different buyers. Doctor's Best uses the patented Albion TRAACS bisglycinate chelate at a value price; Thorne is the practitioner-grade brand with NSF Certified for Sport testing. This is the value-versus-practitioner magnesium decision.
Both deliver 200mg of elemental magnesium in the glycinate form research supports for sleep, muscle relaxation, and blood pressure. The gap is in certification depth and, more sharply, in price per dose.
We scored both on evidence, quality, cost per effective dose, and transparency.
Detailed Score Breakdown
Doctor's Best High Absorption Magnesium Glycinate Lysinate
Doctor's Best
Uses Albion TRAACS chelated bisglycinate - a patented chelation process with published bioavailability data
Uses Albion Minerals TRAACS chelate (the gold standard for mineral chelation). GMP facility. Third-party tested but no USP/NSF certification.
$0.17/day at 200mg elemental - still strong value for a patented Albion TRAACS chelate, the best quality-to-cost balance here
Full disclosure of elemental magnesium amount. Albion chelate form clearly identified. No proprietary blends.
Uses Albion TRAACS - the most research-backed chelated mineral technology. Best combination of quality and value.
Thorne Magnesium Bisglycinate
Thorne
Magnesium bisglycinate chelate from a practitioner-trusted brand
NSF Certified for Sport (this powder is individually listed). Thorne exceeds cGMP standards. Third-party tested by independent labs.
$0.72/day at 200mg elemental - a steep premium and the priciest here; Thorne enforces minimum advertised pricing so it rarely discounts, and the Amazon Buy Box has recently run as high as ~$52
Clean label. Minimal excipients. Elemental magnesium amount clearly stated. Form precisely identified.
Thorne's manufacturing standards are among the highest in the industry, and this powder is individually NSF Certified for Sport. Trusted by Mayo Clinic and numerous sports teams. You pay a steep premium for it - several times the per-dose cost of our value picks.
How We Compared These Products
Every product in our database is scored on four equally-weighted pillars: dosing accuracy and form quality, purity verification (third-party testing), cost per clinically effective dose (not cost per pill), and label transparency. Each pillar is worth 25 points for a total of 100.
Cost per effective dose is calculated using the clinically studied dose from published research, not the manufacturer's suggested serving. If a product requires multiple servings to reach the dose used in clinical trials, that cost is reflected in the value score.
For a full explanation of our scoring methodology, see our methodology page. Prices were last checked on the dates listed for each product and may have changed.
Frequently Asked Questions
Is Doctor's Best or Thorne magnesium glycinate better?
Doctor's Best scores higher on our rubric (90 vs 81 on our 0-100 execution score) and costs about 4x less - roughly $0.17 per day versus Thorne's $0.72 - for the same 200mg elemental magnesium in glycinate form. Thorne's advantage is NSF Certified for Sport testing, which drug-tested athletes need. For most buyers Doctor's Best is the better value; Thorne is the choice if sport certification is a requirement.
Why is Thorne magnesium so much more expensive?
Thorne prices at a practitioner-grade premium and carries NSF Certified for Sport certification, which requires per-lot banned-substance testing. That testing and Thorne's positioning push the price to about $0.72 per effective dose - well above value brands. The magnesium itself (bisglycinate chelate) is the same well-absorbed form Doctor's Best uses; you are paying for the certification and the brand, not a different active ingredient.
More Magnesium Glycinate Comparisons
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FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.