NOW Foods
Magtein Magnesium L-Threonate
88/100
SUPPIE SCORE
82/100
EFFICACY
High
SAFETY
90/100
CLEANLINESS
What Does Magtein Magnesium L-Threonate Do?
NOW Foods Magtein offers a well-dosed, research-backed Magnesium L-Threonate formula for cognitive support, with strong evidence for memory benefits. Inactive ingredients are safe and clean. Overall low risk, ideal for brain health.
What are the cognitive benefits of Magnesium L-Threonate?
How does Magtein support brain health and memory?
What dosage of Magnesium L-Threonate is recommended for daily use?
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What Are the Benefits of Magtein Magnesium L-Threonate?
Based on proven scientific research
Cognitive SupportStrong
Memory and LearningStrong
Brain HealthModerate
Good For:
What Are the Side Effects of NOW Foods Magtein Magnesium L-Threonate?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•Magnesium L-Threonate at 2,000 mg (144 mg elemental) is within safe daily limits (350-400 mg for adults), minimizing overdose risk per NIH guidelines.
•May cause initial mild side effects like drowsiness or headaches in some users, which typically resolve; consult a doctor if persistent.
•Low interaction potential with medications, but caution advised with other magnesium supplements or antibiotics to avoid excess absorption.
•Generally safe for healthy adults; not recommended for children, pregnant/nursing women without medical advice due to limited specific studies.
•Vegetarian formula free of common allergens; produced in GMP facility, reducing contamination risks.
•Long-term use appears safe at this dosage, but monitor magnesium levels if you have kidney issues.
Potential Side Effects
Negative Interactions
Allergens
None declared
Inactive Ingredients
Hypromellose (cellulose capsule)
Low RiskRice flour
Low RiskStearic acid (vegetable source)
Low RiskSilicon dioxide
Low RiskWhat Are the Ingredients in NOW Foods Magtein Magnesium L-Threonate?
Magnesium (elemental)
144 mg
Magtein (Magnesium L-Threonate)
2 g (2,000 mg)
Hypromellose (cellulose capsule)
Rice flour
Stearic Acid (vegetable source)
Silicon Dioxide
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Dosage & Bioavailability
How the active doses and forms in Magtein Magnesium L-Threonate compare to the research.
•Magnesium (elemental) — 144 mg per serving; within the 100-400 mg/day typically used in studies. This range is provisional until reviewed.
•Magtein (Magnesium L-Threonate) — 2,000 mg per serving is over the 350 mg/day upper limit (IOM (NIH ODS)). If this is the weight of the whole compound, the amount of the mineral itself is lower.
Sources & References
Frequently Asked Questions
Common questions about NOW Foods Magtein Magnesium L-Threonate