Source Naturals Ultra-Mag
- Magnesium
- Capsule
- 360
- Unflavored
- Better rated than 62%
A five form magnesium blend from Source Naturals in a large 360 capsule vegan bottle, built around muscle relaxation and nerve support.
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How it ranks among the 108 magnesium we track
4.7★ across 54 Amazon ratings, Bayesian-smoothed toward the category average.
54 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ 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: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Source Naturals Ultra-Mag is a vegan magnesium supplement combining five bioavailable forms, citrate, succinate complex, glycinate, malate, and taurate, in 360 capsules aimed at muscle relaxation and nerve support.
Using five magnesium forms together is meant to spread absorption across different pathways rather than relying on one form, which some people tolerate better than others. Source Naturals lists benefits across brain, cardiovascular, muscle, and skeletal support, tying the formula to broad nervous system and muscular use rather than a single target. The 360 capsule count is a large bottle, suited to daily long term use.
- 5 in 1 bioavailable magnesium blend
- Citrate, glycinate, malate, taurate, and succinate forms
- Vegan capsules, 360 count
- Free of dairy, egg, gluten, soy, and wheat
Who it's for
People who have had trouble with a single magnesium form, such as magnesium oxide causing digestive upset, and want a blended alternative instead. Also suited to anyone managing muscle tension or nerve related discomfort who wants a vegan capsule option.
Strengths and trade-offs
Drawn from this product's published specifications.
- Five magnesium forms combined in one capsule
- Vegan capsules, free of dairy, egg, gluten, soy, wheat
- Large 360 count bottle for long term use
- Multi form blend means no single magnesium type dominates for those who prefer one
- No description or reviews included with this listing
Performance notes
The formula lists magnesium citrate, succinate complex, glycinate, malate, and taurate together, a five form approach intended to combine the gentler digestive profile of glycinate with the broader systemic use of citrate and malate. It is free of dairy, egg, gluten, soy, and wheat, which limits common allergen exposure for a supplement taken daily.
Specifications
| Brand | Source |
|---|---|
| Model | SN2953 |
| Form | Capsule |
| Supplement Type | Magnesium (as magnesium citrate succinic acid complex, glycinate, malate, and ta |
| Count | 360 |
| Benefits | Brain Health, Cardiovascular Health, Muscle Pain Control, Skeletal Support |
| Flavor | Unflavored |
| Diet | Vegan |
| Allergens | Dairy Free, Egg Free, Gluten Free, Soy Free, Wheat Free |
How it compares
This product against the closest alternatives we track in magnesium.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Source Naturals Ultra-MagThis product | 4.7 / 5 | 54 | 3.8 / 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 Source SN2953
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What magnesium forms are in Source Naturals Ultra-Mag?
The formula combines magnesium citrate succinate complex, glycinate, malate, and taurate in one capsule.
Is Ultra-Mag vegan?
Yes, the capsules are labeled vegan and free of dairy, egg, gluten, soy, and wheat.
How many capsules come in a bottle?
The bottle contains 360 vegan capsules.