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Magnesium L-Threonate

product on market Capsule Dr. Mercola Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Magnesium L-Threonate, marketed as Magtein, is researched for its ability to cross the blood-brain barrier to support cognitive function. Current evidence for these specific benefits is limited due to a small number of clinical studies. The ingredient profile maintains a high safety rating for general use.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Magnesium L-Threonate
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Licaps(TM) Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

144 mg (36% DV)
Within RDA (0.3× RDA) 316 studies (A:8, B:159)
Magtein
2000 mg

Other Ingredients

Glycerin Vegetable Cellulose purified Water
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

SUGGESTED USE: As a dietary supplement, take four (4) Licaps(TM) capsules daily. Two (2) mid-day and two (2) at night, 2 hours before bed.

Warnings & Precautions

Do not use if safety seal is broken.

KEEP OUT OF REACH OF CHILDREN.

Additional Information

Dr. Mercola has been providing quality products since 2001. To see more products, go to products.mercola.com

STORE IN A COOL, DRY PLACE WITH LID TIGHTLY CLOSED.

10080-v106

2,000 mg per serving

Magtein(TM)

PREMIUM SUPPLEMENTS

Manufactured in the USA

Metadata

Product Details

UPC / SKU8 13006 01519 6
DSLD Entry Date2014-08-26
Product TypeOther Combinations
FormCapsule
BrandDr. Mercola
DSLD ID35138
Data Updated2026-04-11
Research

Research Evidence

849
Research Sources
56
Avg Quality
450
Meta Analysis
152
Rct
137
Systematic Review
73
Clinical Trial
11
Regulatory Source
7
Other
7
Guideline
3
Openfda Safety
2
Cochrane Review
2
Observational
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008 PubMed DOI
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023 PubMed DOI
A Dietary sodium, sodium-to-potassium ratio, and risk of stroke: A systematic review and nonlinear dose-response meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2019 PubMed DOI
A The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2021 PubMed DOI
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
View all evidence for Electrolytes →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.