Solaray Magnesium Glycinate Powder
Magnesium Glycinate Powder · 9.8 oz
Elemental magnesium 350 mg per label serving.
- Amount
- Elemental magnesium 350 mg
- Format
- Powder
- Review basis
- Label-based analysis
Check medicines and kidney-health concerns before use. Review the safety context.
No matched retailer offer is recorded. Use the review to check the exact label and availability.
The product, at a glance
Amounts for the reviewed label serving.
- Reviewed variant
- Magnesium Glycinate Powder · 9.8 oz
- Label serving
- 1 rounded scoop (5.57 g)
- Servings per reviewed pack
- 50
- Ingredients per label serving
- Elemental magnesium 350 mg
- Other ingredients
- Citric acid
- Storage
- Store in a cool, dry place
Label sources & rating context
~ means approximate; — means no published value in this record. Customer ratings are the named publisher’s snapshot and may include multiple sizes or earlier formulas. The Supplement Explained Score is our source-reviewed editorial assessment out of 25, separate from customer stars. Compare the five criteria and the same intended use; the total is not a clinical ranking. Prices are dated USD offer snapshots; cost uses the reviewed pack and label serving.
- Label clarity: 5/5
- Evidence transfer: 4/5
- Safety fit: 3/5
- Quality proof: 2/5
- Value fit: 3/5
On this pageTable of Contents
- 1Supplement Explained Score
- 2What the current powder label says
- 3A rounded scoop is not an exact-looking fraction
- 4What the shorter ingredient list does—and does not—tell you
- 5Price compared with Thorne powder
- 6How the two powders differ beyond price
- 7Check total magnesium before adding a full scoop
- 8Common powder questions
Our editorial assessment
Supplement Explained Score
17/25
Solaray Magnesium Glycinate Powder · Magnesium Glycinate Powder · 9.8 oz
Five equally weighted criteria, with a product-specific reason for every point. This is a buying-decision assessment, separate from customer stars and personal medical suitability.
- Label clarity 5/5
- Reviewed Magnesium Glycinate Powder · 9.8 oz: 1 rounded scoop (5.57 g); 50 label servings. Elemental magnesium 350 mg.
- Evidence transfer 4/5
- The 350 mg elemental amount is distinct from chelate mass; glycinate positioning does not prove a sleep benefit.
- Safety fit 3/5
- The full serving reaches the adult supplemental magnesium UL; reduced kidney function, GI tolerance and interacting drugs matter.
- Quality proof 2/5
- The labeled powder is identifiable, but no independent finished-tub record was verified.
- Value fit 3/5
- Powder allows portioning, but flavor/sweetener preferences and the full 350 mg amount affect routine fit.
Review basis: Published labels, manufacturer/retailer information, clinical sources and exact-product quality records where available. We did not buy, personally use or laboratory-test this product for this assessment.
Reviewed · Method v2.0 · How we assign points
Sources behind this score
Product labels and independent directory records identify a formula or testing scope. Clinical references concern ingredients or studied regimens unless the explanation explicitly matches the finished formula.
The main decision is whether a measured powder suits your routine better than pre-counted capsules. Its ingredient list is not the same as Solaray’s magnesium capsules, which include BioPerine and require four capsules for their 350 mg serving. [2]
What the current powder label says
| Detail | Reviewed product |
|---|---|
| Container | 9.8 oz |
| Label serving | One rounded scoop, 5.57 g |
| Servings | 50 |
| Elemental magnesium | 350 mg per serving |
| Magnesium source | Magnesium glycinate |
| Other ingredient | Citric acid |
| Added sweetener | None listed |
| Mixing instruction | Mix a serving with 8 fl oz water |
These are manufacturer specifications, not measured results from our own scoop or laboratory. Use the supplied instructions and the actual package version you receive. [3] [1]
View the manufacturer’s Supplement Facts label
View original manufacturer label
Manufacturer label; check the package you receive for changes.
A rounded scoop is not an exact-looking fraction
Powder makes it possible to measure material, but it does not make every improvised measurement accurate. A rounded scoop is a particular label instruction; it is not a level teaspoon, and an estimated half-scoop is not a validated half-dose.
If you are switching because capsules are hard to swallow, compare opening capsules with using a purpose-made powder.
The 5.57 g figure is the mass of a full serving of the powder, not 5.57 g of elemental magnesium. The nutrient amount is 350 mg. These numbers describe different things and should not be added together. For the same reason, comparing powder weight across brands is less useful than comparing the declared magnesium amount. [1]
Someone who needs a precise amount different from the labeled serving should discuss an appropriate product and measurement method with a clinician or pharmacist instead of relying on the appearance of a scoop. A lower-amount, premeasured product may be easier to use consistently.
What the shorter ingredient list does—and does not—tell you
The absence of an added sweetener may matter when you specifically dislike monk fruit or want to choose the drink’s other ingredients yourself. The absence of BioPerine distinguishes this powder from the reviewed Solaray capsules. These are concrete formulation preferences. [1] [2]
They do not prove superior absorption, greater sleep benefit, or fewer side effects. Nor does a short ingredient list establish that a product is appropriate for someone with a medical condition. “Fewer ingredients” and “better for this person” are not the same claim.
Citric acid remains part of the formula. Therefore, avoid treating the product as pure magnesium glycinate with absolutely nothing else added. We also cannot promise a particular taste or complete dissolution without a documented product test.
Price compared with Thorne powder
The following displayed one-time manufacturer prices were checked on September 27, 2026. Tax, shipping, subscriptions, coupons, and future price changes are not included. [3] [4]
| Product | Bottle price | Servings | Magnesium per serving | Cost per serving | Cost per 100 mg magnesium |
|---|---|---|---|---|---|
| Solaray powder | $26.99 | 50 | 350 mg | $0.54 | $0.15 |
| Thorne bisglycinate powder | $52.00 | 60 | 200 mg | $0.87 | $0.43 |
The normalized calculation for Solaray is $26.99 ÷ (50 × 350 mg) × 100 mg = about $0.154 per 100 mg. The equivalent Thorne calculation is about $0.433. Rounding in the table does not change the underlying denominator.
Solaray costs less per declared magnesium amount in this two-product snapshot. That is not a claim that it is the cheapest powder on the entire market or that the products provide identical value in every other respect. Thorne’s exact powder has an NSF Certified for Sport listing; that can be a meaningful requirement independent of cost. [5]
How the two powders differ beyond price
Thorne’s label lists 200 mg per scoop and monk fruit concentrate, whereas Solaray’s lists 350 mg and no added sweetener. An athlete looking for the named sport certification has a reason to consider Thorne. A shopper specifically avoiding sweeteners has a reason to consider Solaray. Neither label supports converting those preferences into a universal winner. [4] [1] [5]
Both require a mixing routine. For travel, you also need to consider packaging, access to a drink, and an appropriate measuring method. Capsules can be more convenient for counted units, while powder avoids swallowing several capsules. These are practical trade-offs rather than evidence of a faster clinical effect.
Check total magnesium before adding a full scoop
A 350 mg serving equals the US adult upper limit for magnesium from supplements and medications. Magnesium naturally present in food is excluded from that particular limit. Add up other supplemental sources before assuming there is room for another full serving. [6]
Loose stools, nausea, or cramping can occur with supplemental magnesium. Kidney impairment and certain medicines require additional attention. The number on a serving label is not a diagnosis of deficiency, and it does not establish your personal requirement. [6]
Common powder questions
Is the powder sugar-free or unflavored?
No sugar or sweetener is listed in the reviewed ingredient panel. That supports an ingredient-list statement, not a taste claim. Citric acid can still affect the drink, and we have not performed a sensory test. [1]
Does powder absorb better than capsules?
We did not establish a direct trial demonstrating that this Solaray powder produces better absorption or clinical outcomes than the brand’s capsule formula. Choosing powder solely for swallowing, sweetener, or measurement preferences is a clearer decision than assuming the format is inherently stronger.
How should it be stored?
The manufacturer directs cool, dry storage. Keep the container closed and follow the package instructions. We have not established a separate stability period for a drink prepared in advance, so do not infer one from dry-powder storage instructions. [3]
For a broader choice, use the magnesium powder comparison. The product’s strongest case is its clearly stated powder format, ingredient list, and current quantity-based cost—not an unverified promise about sleep or absorption.
Related reading
For the practical trade-offs of scooping and swallowing, see our magnesium powder-versus-capsule comparison.
For gastrointestinal effects and signs that need assessment, read our guide to magnesium and diarrhea.