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Magtein Magnesium L-Threonate Capsules 667 mg

product on market Capsule Nootropics Depot Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · grounded in 1 source · methodology

Magnesium L-threonate is researched for its ability to cross the blood-brain barrier to support cognitive function and memory. Current evidence for these specific neurological benefits is limited compared to other magnesium forms. The ingredient is generally recognized as safe for supplementation.

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

Label

Product Label

Label for Magtein Magnesium L-Threonate Capsules 667 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

3 Capsule(s)
Serving Size
60
Servings
Mineral
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

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

Other Ingredients

Magnesium Stearate Silicon Dioxide Vegetable Cellulose
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: Take 3 capsules daily, 1 in the morning and 2 together in the evening 2 hours before sleep.

Warnings & Precautions

Disclaimer: Consult your doctor if taking prescription drugs with Magtein.

Keep out of reach of children. Not recommended for children nor women who are pregnant or breastfeeding. Do not take this or any other supplement if under the age of 18 or if you have any known or suspected medical conditions.

Not recommended for children nor women who are pregnant or breastfeeding.

Do not use if safety seal is damaged or missing. Maximum dose of 4 grams (4000 mg) per day. Like other magnesium products, Magtein may induce sleepiness, drowsiness or headaches. This may indicate a magnesium deficiency and is temporary. Reduce the dosage, consult a doctor or discontinue use if conditions persist for more than one week.

Additional Information

Keep away from direct sunlight/heat. Store in a cool/dry place.

Transfer scoops are not accurate forms of measurement. A milligram scale is needed to accurately measure dosages.

Storage: Store in a cool and dry place. Keep away from direct sunlight and heat.

Metadata

Product Details

DSLD Entry Date2023-05-24
Product TypeMineral
FormCapsule
DSLD ID285822
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
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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.