Sports Research Magnesium Glycinate
- Magnesium
- Capsule
- Magnesium Glycinate
- 90
- Better rated than 95%
A vegan, chelated magnesium glycinate capsule at a moderate 160 mg dose, a reasonable pick for anyone specifically avoiding the digestive upset associated with cheaper magnesium forms.
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How it ranks among the 108 magnesium we track
4.8★ across 1,800 Amazon ratings, Bayesian-smoothed toward the category average.
1,800 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
10,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 108 magnesium we track - how the scorecard works · full magnesium data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Sports Research Magnesium Glycinate delivers 160 mg of chelated magnesium per vegan capsule, in a 90-count bottle, formulated as a glycinate form aimed at supporting sleep and normal enzymatic processes.
Magnesium glycinate is the chelated form often chosen over magnesium oxide because it's generally gentler on the digestive system, which matters for anyone who has had stomach upset from cheaper magnesium salts. The 160 mg dose here is a moderate per-capsule amount, so multiple capsules may be needed to reach a full daily target depending on other dietary intake.
- 160 mg chelated magnesium glycinate per capsule
- 90 vegan capsules per bottle
- Gluten free
- Unflavored
Who it's for
People looking for a chelated magnesium form to support sleep or general enzymatic function, particularly those who've had digestive issues with other magnesium types. Not for someone wanting a very high single-capsule dose.
Strengths and trade-offs
Drawn from this product's published specifications.
- Chelated glycinate form is easier on digestion than oxide
- 160 mg per capsule is moderate, may require more than one capsule for a full daily target
- No reviews on file to confirm real-world sleep effects
Performance notes
Glycinate chelation binds magnesium to the amino acid glycine, which is the mechanism generally credited with the form's better tolerability compared to magnesium oxide or citrate at equivalent doses.
Specifications
| Brand | Sports |
|---|---|
| Model | FG441 |
| Form | Capsule |
| Supplement Type | Magnesium Glycinate |
| Count | 90 |
| Benefits | Supports Enzymatic Processes* |
| Flavor | Unflavored |
| Diet | Gluten Free, Vegan |
| Allergens | Gluten Free |
Other Sports magnesium
How it compares
This product against the closest alternatives we track in magnesium.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Sports Research Magnesium GlycinateThis product | 4.8 / 5 | 1,800 | 4.6 / 5 |
| Nature Made Magnesium Oxide 250 mgNATURE | 4.7 / 5 | 34,500 | 4.6 / 5 |
| NaturalSlim MagicMag Magnesium Citrate Powder for StressNaturalSlim | 4.7 / 5 | 26,700 | 4.6 / 5 |
| NOW Supplements, Magnesium Citrate, Enzyme Function*, Nervous System Support*, 120 Veg…Now | 4.7 / 5 | 25,200 | 4.6 / 5 |
| Life Extension Magnesium CapsLife | 4.7 / 5 | 16,700 | 4.6 / 5 |
Similar magnesium from other brands
Questions about the Sports FG441
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How much magnesium is in each capsule?
160 mg of chelated magnesium glycinate.
Is it vegan?
Yes, the capsule is listed as vegan.
How many capsules are in a bottle?
90 capsules.