Magtein - Magnesium L-Threonate
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Hypromellose, Rice Flour, Stearic Acid, Silicon Dioxide
Recommended Use
Suggested Usage: Take 3 capsules daily in divided doses (take 1 capsule in the morning and 2 capsules two hours before sleep).
Warnings
Caution: For adults only. Like other magnesium products, Magtein may induce sleepiness, drowsiness or headaches at first. Reduce the dosage, consult a doctor or discontinue use if conditions persist for more than one week. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children. Not manufactured with wheat, gluten, soy, milk, egg, fish,
Frequently Asked Questions
What is NOW Foods Magtein - Magnesium L-Threonate's Formulate score?
NOW Foods Magtein - Magnesium L-Threonate scores 74 out of 100 (grade B+) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is NOW Foods Magtein - Magnesium L-Threonate worth it?
NOW Foods Magtein - Magnesium L-Threonate scores 74/100 (grade B+). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in NOW Foods Magtein - Magnesium L-Threonate?
Each serving contains Magnesium (144 mg), Magtein (2 g). Serving size: 3 Veg Capsule(s). 30 servings per container.
How do I take magtein - magnesium l-threonate?
Suggested Usage: Take 3 capsules daily in divided doses (take 1 capsule in the morning and 2 capsules two hours before sleep).
Who makes Magtein - Magnesium L-Threonate?
Magtein - Magnesium L-Threonate is made by NOW Foods. See Formulate's full grade and product lineup for NOW Foods on its brand page.
Is NOW Foods Magtein - Magnesium L-Threonate third-party tested?
NOW Foods lists the following certifications and testing for this product: Vegan, Vegetarian, Gluten-Free, Dairy-Free.
Related Supplements
Track magtein - magnesium l-threonate in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Is Magtein - Magnesium L-Threonate right for your goals?
Two questions, then every ingredient graded against what you're actually trying to do — plus what it costs per effective dose.
Build my stack2 questions · free · no account needed to start
Also on iPhone — get the free app
Evidence-based supplement guides, no spam
We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.
Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.