Best Magnesium Glycinate Supplements (2026) — Ranked by Cost per Effective Dose
Top pick for Magnesium Glycinate: Vitamin Shoppe Magnesium Glycinate 400mg — 400mg per 2 tablets, $0.24/day. Our best-value pick.
All Magnesium Glycinate Supplements Compared
All 6 products sorted by cost per clinically-effective daily dose (lowest first). Dose, certification, and pricing verified against NIH DSLD and manufacturer data.
| Product | Brand | Dose / Serving | Cost / Day | Certification | Pick | Buy |
|---|---|---|---|---|---|---|
| BulkSupplements Magnesium Glycinate Powder | BulkSupplements.com | 225mg / 1250 mg powder (~1/2 tsp) | $0.18 | None | Budget Pick | Buy |
| Vitamin Shoppe Magnesium Glycinate 400mg | The Vitamin Shoppe | 400mg / 2 tablets | $0.24 | None | Best Value | Buy |
| Nature Made Magnesium Glycinate 200mg | Nature Made | 200mg / 1 capsule | $0.47 | USP Verified | Quality Pick | Buy |
| Doctor's Best High Absorption Magnesium | Doctor's Best | 200mg / 2 tablets | $0.51 | None | Buy | |
| KAL Magnesium Glycinate 400 | KAL | 400mg / 2 tablets | $0.62 | None | Buy | |
| Thorne Magnesium Bisglycinate | Thorne | 200mg / 1 capsule | $0.87 | NSF Certified for Sport | Buy |
Our Picks
Best Value: Vitamin Shoppe Magnesium Glycinate 400mg
400mg per 2 tablets. $0.24/day. 90 servings per container at $21.99.
Quality Pick: Nature Made Magnesium Glycinate 200mg
200mg per 1 capsule. USP Verified. $0.47/day. 60 servings per container at $13.99.
Budget Pick: BulkSupplements Magnesium Glycinate Powder
225mg per 1250 mg powder (~1/2 tsp). $0.18/day. 200 servings per container at $19.96.
How We Rank Magnesium Glycinate Supplements
Every product is evaluated on three criteria:
- Cost per clinically-effective daily dose. Not cost per pill or cost per bottle. We calculate what it actually costs per day to take the dose used in clinical trials.
- Third-party certification. USP Verified, NSF Certified for Sport, and ConsumerLab Approved indicate independent testing for purity, potency, and contaminants.
- Bioavailable form. We prioritize products using the specific chemical form shown to be most effective in published research.
Rankings are not influenced by affiliate commissions. We earn the same commission regardless of which product you choose. Read our full methodology.
Personalize Your Magnesium Glycinate Choice
Not sure which magnesium glycinate supplement is right for you? Use our free tools:
- DNA Supplement Analyzer — upload 23andMe or AncestryDNA data to check for genetic variants affecting magnesium glycinate metabolism. Runs entirely in your browser.
- Lab Results Interpreter — enter your blood test values to get personalized dosing recommendations.
- Supplement Stack Builder — build a complete protocol based on your age, sex, medications, and goals.
- Supplement Audit — already taking magnesium glycinate? Check if you have the right form and dose.