Magnesium L-Threonate Magtein®
Magnesium L-Threonate Magtein®
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Product Information
Product Information
What is Magnesium L-Threonate?
Magnesium L-Threonate is a chemical compound consisting of magnesium and L-threonic acid, a metabolite of vitamin C. This form of magnesium is known for its high bioavailability, meaning it is efficiently absorbed and utilized by the body. Due to its unique structure, Magnesium L-Threonate can effectively cross the blood-brain barrier, allowing it to increase magnesium concentrations in the brain. This is important because magnesium plays a crucial role in numerous biochemical processes in the brain, including synaptic plasticity, which is essential for learning and memory functions. Because of these properties, Magnesium L-Threonate is researched and valued for its potential benefits.
General health benefits of Magnesium:
- Magnesium contributes to the maintenance of normal bones.
- Magnesium contributes to normal cell division.
- Magnesium contributes to normal protein synthesis.
- Magnesium contributes to good electrolyte balance.
- Magnesium contributes to normal energy-yielding metabolism.
- Magnesium contributes to the maintenance of normal teeth.
- Magnesium contributes to normal psychological function.
Magnesium L-Threonate has high absorbability
Magnesium malate, taurate, bisglycinate, and L-threonate are forms of magnesium that are organically bound, ensuring better bioavailability and absorption in the body. In contrast, inorganic magnesium forms, such as magnesium chloride, magnesium oxide, and magnesium sulfate, have lower bioavailability and are therefore absorbed less efficiently by the body.
Difference between Magnesium L-Threonate and Magnesium Oxide
Magnesium L-Threonate differs significantly from other forms of magnesium supplements, such as magnesium oxide. Magnesium oxide has a high magnesium concentration per unit of weight, but it is less well absorbed by the body, which can lead to gastrointestinal side effects like diarrhea. In contrast, Magnesium L-Threonate has a lower magnesium concentration per unit of weight but is known for its superior absorption and ability to cross the blood-brain barrier. This makes it particularly effective at increasing magnesium levels in the brain, which can contribute to improved cognitive functions such as memory and learning. While magnesium oxide is mainly used for general magnesium supplementation and relieving constipation, Magnesium L-Threonate is specifically valued for its potential benefits for brain health.
Magnesium is essential for more than 300 bodily processes
Magnesium is an essential mineral involved in more than 300 biochemical processes in our bodies. It plays a crucial role in energy production, protein synthesis, muscle and nerve function, blood pressure regulation, and maintaining healthy bones and teeth. Additionally, magnesium is important for enzyme function, supporting the immune system, and promoting good mental health. Due to its versatile functions, magnesium is indispensable for maintaining our overall health and vitality.
L-Threonic acid is a metabolite of vitamin C
L-Threonic acid is a substance that forms when vitamin C (ascorbic acid) is broken down in the body. It is a simple molecule with four carbon atoms and the chemical formula C4H8O5. During the processing of vitamin C in the body, various steps are followed, with L-threonic acid being one of the intermediates. This conversion helps regulate and recycle vitamin C in the body. The level of L-threonic acid can indicate how vitamin C is used and broken down, providing insight into a person’s vitamin C status.
Buying Magnesium L-Threonate from Cerebra
Our Magnesium L-Threonate capsules are of the highest quality and sourced from reliable suppliers. We ensure that our products meet strict quality standards so you can confidently purchase and experience their benefits.
Combining Magnesium L-Threonate with Rhodiola Rosea
Magnesium L-Threonate is valued for its unique brain bioavailability, while Rhodiola Rosea is an adaptogen known for balance under stress. Together, they form a smart duo for mental resilience. Magnesium supports normal psychological function, and rhodiola provides comfort in times of pressure. This combination helps you stay clear-headed and adaptable, even when life feels overwhelming. By supporting both calm and focus, it’s a natural choice for those who want to perform at their best.
Ingredients
Ingredients
How to use
How to use
We work with a Dutch certified lab that follows strict standards and tests every ingredient before it is used. Only the essential additives are included, ensuring our products are safe and effective for daily use.

Clean supplements, clean thinking
At Cerebra, we believe everything begins in the brain, the center where nearly all bodily functions are processed and controlled. Our mission grew out of a personal struggle with ADHD and the search for focus, where conventional prescriptions came with side effects that outweighed the benefits. In a world full of complex supplement blends and unnecessary additives, we chose a different path: clean, single-ingredient products. This way, you can build your own formula or simply benefit from the purity of one trusted ingredient, supporting your brain in the most natural and transparent way.
You have questions, we've got the answers
What makes Cerebra supplements different from others?
What makes Cerebra supplements different from others?
Cerebra stands for purity, transparency, and choice. We offer only single-ingredient supplements, with no unnecessary additives, so you can build your own stack or enjoy the benefits of each ingredient on its own.
How do you test the quality of your supplements?
How do you test the quality of your supplements?
We work closely with a certified lab in the Netherlands that follows strict regulations. Every ingredient is carefully tested for purity, safety, and quality before it goes into our products, ensuring you get exactly what you expect.
Where are your supplements produced?
Where are your supplements produced?
All our supplements are proudly produced in the Netherlands, following the highest European quality standards. By working with certified Dutch partners, we guarantee purity, safety, and consistency in every batch
How should I take the capsules, and at what time of day?
How should I take the capsules, and at what time of day?
All Cerebra products are safe for daily use and are designed to support specific areas of health, mainly focused on the brain. We recommend taking the capsules with water, preferably alongside a meal. The best time of day depends on your goal. For example, take focus-supporting products before studying or working. The most important part is consistency, so choose a routine that works for you and stick to it.
What is your shipping and returns policy?
What is your shipping and returns policy?
All orders placed before 23:00 are shipped the same day. Depending on your country, we select the fastest and most reliable courier option. Returns are possible within 14 days if the pouch has not been opened. Simply email us at info@cerebra-nootropics.com, and we’ll guide you through the process.

