Thorne Magnesium Bisglycinate Review 2026: Review
Checks out. — Legitimate
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"Well-absorbed, gentle magnesium form"
Magnesium glycinate is a chelated form that absorbs well and causes less diarrhea than oxide or citrate.
Examine.com magnesium supplementation page -
"Third-party tested for athletes"
NSF Certified for Sport means each batch is checked for label accuracy and banned substances.
NSF Certified for Sport database -
"Promotes restful sleep"
Magnesium helps sleep mainly in people who are deficient; effect in well-nourished adults is small.
PubMed: magnesium and sleep reviews -
"Fair value for the magnesium inside"
At $0.87 per 200mg serving you pay roughly 15-20x the wholesale mineral cost; generic glycinate runs a fraction of that.
Consumer advice
If you want a well-absorbed, gut-friendly magnesium and value NSF Certified for Sport testing (useful for competitive athletes), this is a solid, honest pick. If you're not drug-tested and just want the same magnesium, buy a cheaper glycinate — or even Thorne's own Magnesium Glycinate capsules at half the price. Note the 200mg dose is about half the RDA, so it complements diet rather than replacing it. Start with a smaller amount if you're prone to loose stools.
Claims vs Evidence
MODEST2 of 5 claims supported by evidence. These grades score the marketing, not the product — a claim only counts as supported when the label discloses a dose that matches the studies behind it, so blends that hide doses cap at “partial” no matter how good the formula is.
"promotes restful sleep and muscle relaxation"
Partial
Magnesium aids relaxation; glycinate is gentle, sleep evidence modest
Based on: Magnesium Bisglycinate
"well-absorbed"
Supported
Glycinate is a well-absorbed chelated magnesium form
Based on: Magnesium Bisglycinate
"decreased laxative effect vs other forms"
Supported
Glycinate is gentler on the gut than oxide/citrate
Based on: Magnesium Bisglycinate
"supports insulin sensitivity and healthy blood pressure"
Partial
Magnesium helps mainly if you're deficient
Based on: Magnesium Bisglycinate
"75% of US adults don't meet magnesium RDI"
Partial
Intake shortfalls common, but frank deficiency less so
Based on: Magnesium Bisglycinate
2 supported · 3 partial
Ingredients
Based on peer-reviewed research from PubMed and Examine.com
Why the chain breaks for this product
Most ingredients below have real research behind them. The problem isn't the ingredients — it's the doses. 2 of 3 are not disclosed on the label, so the product can claim the benefits without delivering the chain that gets you there.
Magnesium (as Magnesium Bisglycinate)
Essential minerals that regulate hydration, nerve function, and muscle contraction. Critical for recovery after heavy exercise.
Research-backed dose: Magnesium RDA 310-420mg/day; supplemental doses 100-400mg
In this product: 200mg elemental
Monk Fruit concentrate
Concentrated fruit and veggie nutrients. May support antioxidant intake, but no clinical proof it replaces whole produce.
Magnesium Bisglycinate
Essential minerals that regulate hydration, nerve function, and muscle contraction. Critical for recovery after heavy exercise.
Price & Value
ModerateThorne Magnesium Bisglycinate
$52
Doctor's Best / NOW Magnesium Glycinate, or Thorne Magnesium Glycinate capsules
~$12-26 for 60-90 servings
What you're actually paying for
This is a multi-ingredient blend at $0.87 a serving. Comparable options: Doctor's Best or NOW Magnesium Glycinate, or Thorne's own Magnesium Glycinate at $26.
Worth paying for
- promotes restful sleep and muscle relaxation
- well-absorbed
- decreased laxative effect vs other forms
- supports insulin sensitivity and healthy blood pressure
- 75% of US adults don't meet magnesium RDI
What's marketing
- Fair value for the magnesium inside
Research sources: PubMed · Examine.com
Analyzed product: https://thorne.com/products/dp/magnesium-bisglycinate
Analysis generated: 2026-07-05 · Engine v1.0.0
Frequently Asked Questions
Is Thorne Magnesium Bisglycinate worth the money?
Thorne Magnesium Bisglycinate at $52 appears to offer reasonable value based on its ingredient quality and dosing. This is a single-ingredient magnesium bisglycinate powder from a reputable, third-party-tested brand. The claims stick to what magnesium actually does, the dose (200mg) is clearly listed and real, and the price is on the high side but not gouging. It's a clean, honest product — the main knock is you can buy the same thing cheaper elsewhere.
Is Thorne Magnesium Bisglycinate a scam?
Thorne Magnesium Bisglycinate does not appear to be a scam. Our analysis found the claims are generally supported by the ingredients.
What are the ingredients in Thorne Magnesium Bisglycinate?
Thorne Magnesium Bisglycinate contains 3 ingredients including Magnesium (as Magnesium Bisglycinate), Monk Fruit concentrate, Magnesium Bisglycinate.
Does Thorne Magnesium Bisglycinate actually work?
Yes, Thorne Magnesium Bisglycinate can work for its intended purpose. 2 of 5 claims are fully supported. 3 are partially supported.
Are there cheaper alternatives to Thorne Magnesium Bisglycinate?
Yes, Doctor's Best / NOW Magnesium Glycinate, or Thorne Magnesium Glycinate capsules at ~$12-26 for 60-90 servings offers similar benefits at a better price point. Many key ingredients in Thorne Magnesium Bisglycinate are available separately for less.