GymSupps Magtein® Magnesium L-Threonate - 90 capsules
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GymSupps Magtein® Magnesium L-Threonate contains patented magnesium that helps reduce fatigue and supports the nervous system and mental health.
GymSupps Magtein® Magnesium L-Threonate
GymSupps Magtein® Magnesium L-Threonate is a special, patented, and scientifically verified form of magnesium, which is the only one proven to penetrate the brain. As a result, it acts directly where magnesium is most important for mental performance and peace of mind. It will help you improve your memory, concentration, sleep quality, and overall mental well-being. Perfect for anyone who wants more energy, a better mood, and to keep their brain in top shape.
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| Memory & concentration | Sleep & mood | Long-term brain vitality |
GymSupps Magtein® Magnesium L-Threonate in brief:
- Patented Magtein® (Magnesium L-Threonate), exclusively licensed by Threotech, LLC
- 1 capsule (666 mg) contains 48 mg of magnesium (12.8% RDI)
- Measurable results within 2 weeks for sleep metrics.
- Suitable for evening use (sleep/peace of mind)
Plant-based capsule
Our capsules are made of plant-based hydroxypropyl methylcellulose, making them an ideal choice for vegans and vegetarians. Compared to animal-based capsules, they are also easier to digest and gentler on your digestive system, without any unnecessary animal ingredients.
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When to start considering Magtein®
- Poor sleep quality, morning "brain fog," demanding study/concentration.
- High mental stress, fatigue, heavy workload.
- Need for long-term brain support (memory, concentration, mood).
- Evening training/competitions — better deep and REM sleep = better recovery.
- Traveling, disrupted schedule, mild jet lag.
Who it is suitable for
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| Students, professionals, creatives, "laptop" workers | Sleep-deprived parents |
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| 50+ (long-term "brain" support) | Athletes (team and endurance sports, strength training) |
Why Magtein® is better than other forms of magnesium
- Exclusive license from Threotech, LLC – the only authentic Magtein® available globally, patented and distributed.
- It is unique in its ability to penetrate the blood-brain barrier and increase magnesium levels directly in the brain. This is different from common forms of magnesium, which replenish magnesium in the blood but lack proof of a comparable increase in the brain.
STUDY Deep Sleep
With Magtein®, deep sleep holds/increases over 3 weeks, while with a placebo, it notably decreases around the 14th day
Source: Hausenblas 2024, Sleep Medicine: X (RCT, 21 days)
STUDY Cognitive function
With the supplement, the overall cognitive score went up significantly, while the placebo showed almost no growth.
average of 4 tests (Memory and learning, Attention, Working memory, Speed/thinking)
Source: Liu 2016, Journal of Alzheimer’s Disease (RCT, 12 weeks)
GymSupps Magtein® Magnesium L-Threonate vs competition

Recommended dosage for Magtein® Magnesium L-Threonate:
- 3 capsules. Do not exceed the recommended daily dose.
- We recommend splitting the dose into 2 parts: a smaller portion in the morning, and a larger portion in the evening 1–2 hours before bedtime.
Warning: Dietary supplement with magnesium. This product is not intended to be used as a substitute for a varied diet. Keep out of reach of children. Store in a dry place at a temperature below 25 °C. Protect from direct sunlight. The manufacturer is not liable for damages caused by improper use or storage. Minimum shelf life indicated on the packaging.







