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Doctor's Best vs NOW Foods 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 now wins on both counts, which reverses what this page said before the mid-2026 price checks. It scores 89 to NOW Foods' 79 on our execution score, and it is also the cheaper of the two at about $0.20 per 200mg elemental dose against NOW Foods' $0.22. The NOW figure moved for a reason worth knowing: its 240-tablet bottle is 120 two-tablet servings, not the 180 our record once claimed, and correcting that arithmetic raised its real cost per dose by about a third. Doctor's Best also uses the patented Albion TRAACS chelate, which has published bioavailability data. On the current numbers there is no trade-off left here: Doctor's Best is both the better-scoring and the cheaper product.
Doctor's Best High Absorption Magnesium Glycinate Lysinate
Doctor's Best
NOW Foods Magnesium Glycinate
NOW Foods
Head-to-Head Comparison
| Category | Doctor's Best High Absorption Magnesium Glycinate Lysinate Doctor's Best | NOW Foods Magnesium Glycinate NOW Foods |
|---|---|---|
| Brand Score | 89/100Winner | 79/100 |
| Dosing & Form | 25/25Winner | 25/25 |
| Purity | 20/25Winner | 19/25 |
| Value | 21/25Winner | 15/25 |
| Transparency | 23/25Winner | 20/25 |
| Cost/Day | $0.20Winner | $0.22 |
| Price checked | 2026-07-30 | 2026-06-08 |
| Dose/Serving | 200mg | 200mg |
| Form | magnesium bisglycinate chelate (Albion TRAACS) | magnesium bisglycinate |
| Third-Party Tested | ✓ Yes | ✓ Yes |
| Proprietary Blend | No | No |
Why This Comparison Matters
Doctor's Best and NOW Foods both target the value-conscious buyer who wants chelated magnesium without paying practitioner-grade prices. Both are among Amazon's best-selling magnesium products, and both frequently appear in "best magnesium" recommendation lists.
The key difference is in the chelation technology. Doctor's Best uses Albion TRAACS - a patented mineral chelation process with published bioavailability data. NOW Foods uses a standard glycinate chelate. Whether that difference matters depends on how much you trust the Albion research and whether you are willing to pay a small premium for it.
We scored both products across evidence, quality, value, and transparency to give you a clear picture.
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.
$0.20/day at 200mg elemental after a 2026 price rise - still the best cost-to-quality balance here on an Albion TRAACS chelate
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.
NOW Foods Magnesium Glycinate
NOW Foods
Magnesium bisglycinate at adequate elemental dose
NPA GMP audited facility. NOW Foods has a strong quality track record. No USP/NSF certification on this product.
$0.22/day at 200mg elemental - mid-pack rather than the bargain a mis-stated serving count once made it look, since the 240-tablet bottle is 120 two-tablet servings, not 180
Good disclosure. Elemental amount clearly stated. Some inactive ingredients (rice flour, gelatin capsule).
Hard to beat on price-per-serving for magnesium glycinate. NOW Foods is a reliable mid-tier brand.
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.
More Magnesium Glycinate Comparisons
We earn commissions on purchases made through our links. This never influences our scores or recommendations. See our editorial policy.
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.