Magnesium L-Threonate — 2100mg Magtein per daily serving, providing 151mg elemental magnesium. 90 capsules, a 30-day supply.
✓ Magnesium contributes to normal functioning of the nervous system
✓ Magnesium contributes to normal psychological function
✓ Magnesium contributes to a reduction of tiredness and fatigue
The original patented form of Magnesium L-Threonate, developed through academic research at MIT.
Magnesium L-Threonate is a specific molecular form of magnesium that attracted research interest for its distinctive properties. Magtein is the patented compound from that research — developed through work at the Massachusetts Institute of Technology — and it is the same material that appears in the published academic literature on this form of magnesium. Each daily serving of three capsules delivers 2100mg of Magtein and approximately 151mg of elemental magnesium (around 40% of the 375mg NRV). The formula is simple: Magtein as the sole active ingredient, a plant-derived HPMC capsule shell, and a GMP-grade rice-based anti-caking agent.
Why People Choose Magnesium L-Threonate
✓ Magnesium contributes to normal functioning of the nervous system
✓ Magnesium contributes to normal psychological function
✓ Magnesium contributes to a reduction of tiredness and fatigue
✓ Magnesium contributes to normal energy-yielding metabolism
✓ Magnesium contributes to electrolyte balance
✓ 2100mg Magtein per daily serving — the dose used in published academic research
✓ Single active ingredient, minimal base — nothing superfluous added
✓ Manufactured in the UK to GMP Code of Practice and ISO 9001
More Than a Standard Magnesium Product
Most magnesium supplements use commodity forms — oxide, citrate, or carbonate — chosen primarily on cost. Magnesium L-Threonate as Magtein represents a different approach. It is not a commodity ingredient. Magtein is a patented molecular form, specified by name, sourced directly rather than substituted from a generic supplier's catalogue. It is the same compound that appears in the published academic work on magnesium L-Threonate, and we use it at the 2100mg gross dose that mirrors the research literature. For people who want a specific, documented provenance behind their magnesium supplement, that distinction matters.
Making It Part of the Daily Routine
Three capsules per day with a large glass of water. Many people find a consistent time — morning, or split morning and evening — makes the three-capsule serving easy to maintain. The capsules are standard size-00 and straightforward to swallow. Because the formula contains only the active compound, a plant-derived capsule shell, and a rice-based anti-caking system, there is nothing to cause digestive disruption for most adults.
About Magtein and Magnesium L-Threonate
Magnesium L-Threonate was developed as a distinct molecular form of magnesium through academic research at MIT. Magtein is the patent name for this specific compound. It has attracted interest in nutritional science as a research-grade form of magnesium with a well-documented history. The 2100mg daily serving used here reflects the compound dose used in that published research — a level that requires three standard capsules rather than one because fitting 2100mg of any compound into a single capsule would require an unusually large format. Each capsule contains 700mg, providing approximately 50mg of elemental magnesium at the ~7.2% elemental content of the compound by molecular weight. Three capsules delivers ~151mg elemental Mg in total.
Inside the Formula
Magnesium L-Threonate (as Magtein), 2100mg per daily serving (three capsules) — the original patented form developed through academic research at MIT. Provides approximately 151mg elemental magnesium (~40% NRV) per daily serving. Magnesium has well-established GB-register health effects including normal functioning of the nervous system, normal psychological function, normal energy-yielding metabolism, electrolyte balance, normal muscle function, and reduction of tiredness and fatigue.
Capsule shell: HPMC (hydroxypropyl methylcellulose) — plant-derived, no gelatin. Suitable for vegans and vegetarians.
Anti-Caking Agent: Rice Blend (Rice Extract, Rice Hulls, Gum Arabic, Sunflower Oil) — a GMP-grade natural anti-caking system. No artificial fillers, binders or flow agents.
90 capsules per bottle — a 30-day supply at three capsules per day. The three-capsule daily serving is a practical format for the 2100mg compound dose.
Swiss BioEnergetics
Trusted UK Manufacturing — Manufactured to the GMP Code of Practice and ISO 9001 at an audited UK facility.
Clean, Potent Ingredients — Magtein as the single active ingredient, specified at source. HPMC capsule shell and a rice-based GMP anti-caking agent. Nothing else.
Evidence-Inspired Formulas — Magnesium has multiple well-established GB-register health effects. Magtein is the original patented form of Magnesium L-Threonate, developed through academic research at MIT.
Our 30-Day Guarantee
Swiss BioEnergetics offers a 30-day satisfaction guarantee on every order. If this product is not right for you, return the unused portion within 30 days for a full refund.
Order or Subscribe
Each bottle is a 30-day supply. Subscribe to make it a continuing monthly delivery — or order a single bottle to start with. Adults who supplement magnesium consistently find a month-on-month supply easier to maintain than buying episodically.
Questions Customers Ask
What is Magtein?
Magtein is the patent name for Magnesium L-Threonate — a specific molecular form of magnesium developed through academic research at MIT. It is not the same as other magnesium salt forms (citrate, oxide, gluconate) or standard chelates. We source and specify Magtein as a named ingredient, meaning we purchase it directly as the patented compound rather than substituting a generic magnesium L-Threonate from a commodity supplier.
Why three capsules and not one?
The 2100mg daily serving reflects the compound dose used in published academic research on Magtein. Fitting 2100mg of any compound into a single capsule would require an unusually large format that most people find difficult to swallow. Three standard size-00 capsules is the practical solution.
How much elemental magnesium does it provide?
Approximately 151mg elemental magnesium per daily serving (three capsules), which is around 40% of the 375mg NRV. If you already use a full-NRV magnesium product, check your total intake across all supplements.
Is it suitable for vegans?
Yes. The capsule shell is HPMC (hydroxypropyl methylcellulose), plant-derived. The anti-caking agent is a rice-based blend with no animal-derived components. There is no gelatin or animal ingredient anywhere in the formula.
Is it suitable for pregnant or breastfeeding women, or children?
No. This product is not recommended for children, pregnant women or those who are breastfeeding. Consult your GP before taking any supplement if you are on prescription medication — magnesium interacts with several drug classes including those for blood pressure and cardiac conditions.
