Sample Comparison
Side-by-side comparison of magnesium glycinate products focusing on elemental magnesium content, third-party testing, form quality, and price per serving. Data current as of November 2026.
| Product / Vendor | Elemental Mg | Testing | Form | Price / Serving | Notes | |
|---|---|---|---|---|---|---|
|
Doctor's Best High Absorption
iHerb / Doctor's Best
|
100–200 mg | 3rd-party | Glycinate / Lysinate | ~$0.12 | Widely available, consistent testing history | View → |
|
Pure Encapsulations Magnesium
Pure Encapsulations
|
120 mg | 3rd-party | Glycinate | ~$0.28 | Practitioner-grade, hypoallergenic | View → |
|
Thorne Magnesium Bisglycinate
Thorne
|
200 mg | NSF / 3rd-party | Bisglycinate | ~$0.35 | Strong testing reputation | View → |
|
Sports Research Magnesium
Sports Research
|
200 mg | 3rd-party | Glycinate | ~$0.18 | Good value, clean label | View → |
|
NOW Foods Magnesium Glycinate
NOW Foods
|
200 mg | In-house + limited | Glycinate | ~$0.09 | Lowest cost, widely available | View → |
|
Designs for Health Magnesium
Designs for Health
|
150 mg | 3rd-party | Bisglycinate chelate | ~$0.32 | Professional line | View → |
Evaluation criteria
Products are compared on publicly available information: labeled elemental magnesium, stated form, published third-party testing or certifications, and calculated price per serving. Rankings are not purchased. Affiliate links may be used; this does not affect scoring.