Brain-focused magnesium powder for cognitive function, memory, mental clarity, relaxation and healthy sleep-wake cycle support.*
RetzlerRx® Magnesium L-Threonate Powder features Magtein®, a patented form of magnesium L-threonate used in formulations focused on brain magnesium and healthy neurological function. This unflavored powder is designed for adults seeking targeted cognitive and relaxation support in an alternative to capsules.*
Unlike magnesium forms commonly selected primarily for general mineral replacement, digestive regularity or muscle support, magnesium L-threonate has a more specialized role in products centered on cognition, memory and brain health. The powder format also provides a practical option for people who prefer mixing their daily serving into water or another beverage.*
Primary use: Cognitive function, memory, focus, relaxation and sleep-wake cycle support*
Key ingredient technology: Magtein® magnesium L-threonate
Flavor: Unflavored
Suggested use: Mix 1 scoop into 8 ounces of water or another beverage
Servings per container: Confirm from product label
Typical container duration: Confirm from servings per container
Dosage form: Powder
What Is Magnesium L-Threonate Powder?
Magnesium L-threonate is a specialized magnesium compound commonly used in supplements intended to support cognitive and neurological function. Magnesium itself is an essential mineral involved in hundreds of enzymatic reactions throughout the body, including processes related to nerve signaling, cellular energy, muscle function and metabolic regulation.
This formula contains Magtein®, a patented magnesium L-threonate ingredient developed for use in brain-health and cognitive-support products. It is intended to support magnesium availability relevant to healthy neurological function, memory, focus and restorative daily rhythms.*
Who May Consider This Formula?
RetzlerRx® Magnesium L-Threonate Powder may be appropriate for adults seeking nutritional support for:
- Cognitive function and memory*
- Mental clarity and focus*
- Learning and healthy neurological function*
- Relaxation and occasional stress resilience*
- A healthy sleep-wake cycle*
- Brain-focused magnesium support in a powder format*
Cognitive symptoms, sleep disruption and changes in mood or memory can have many causes. Persistent, progressive or disruptive symptoms warrant appropriate medical evaluation rather than relying on a supplement alone.
Why This Formulation?
This formula uses Magtein®, a patented magnesium L-threonate ingredient selected for its application in brain-health and cognitive-support formulations. The goal is not simply to provide the largest possible amount of elemental magnesium. It is to provide a specialized magnesium form intended for adults prioritizing neurological and cognitive support.*
The unflavored powder format offers an alternative for people who prefer not to take capsules or who want to mix their magnesium into water or another beverage. It can also make the daily serving easier to incorporate into an established morning or evening routine.
How Is It Different From Less Expensive Magnesium Powders?
Price alone does not determine supplement quality, and a lower-priced magnesium product is not automatically a poor choice. However, products that all say “magnesium” on the label may contain substantially different forms intended for different purposes.
Many lower-cost powders use magnesium citrate, oxide or other forms commonly selected for general magnesium supplementation or digestive support. RetzlerRx® Magnesium L-Threonate Powder uses Magtein®, a patented ingredient technology developed specifically for brain-focused magnesium formulations.
The most useful comparison is therefore not simply the cost per container. It is the magnesium form, intended use, amount per serving, number of servings and quality of the complete formulation.
Suggested Use
Mix 1 scoop into 8 ounces of water or your preferred beverage, or use as directed by your healthcare professional.
Confirm from the current product label whether the serving should be taken with food, at a particular time of day or divided into more than one serving.
How Long Does One Container Last?
At the suggested use of 1 scoop daily, the container should last the same number of days as the listed number of servings.
For example, a container providing 30 servings would last approximately 30 days. Confirm the servings per container on the current label before publishing an exact duration.
Important Cautions
Consult a qualified healthcare professional before use if you are pregnant, breastfeeding, taking prescription medication or managing a chronic medical condition. Individuals with impaired kidney function should seek medical guidance before using supplemental magnesium.
Combining this formula with other magnesium products may increase total supplemental magnesium intake. Keep out of reach of children. Confirm all allergen, dietary, storage and product-specific caution statements from the current label.
Why RetzlerRx®?
RetzlerRx® formulations are selected and developed for use within a physician-led Preventive Longevity Medicine practice. We prioritize meaningful ingredient forms and doses, responsible formulation, appropriate quality standards and clinical restraint.
Supplements are tools—not substitutes for diagnosis, medical treatment, nutrition, sleep, exercise or the other foundations of health.
Learn More About Brain Health and Healthy Aging
- Explore RetzlerRx® Longevity Supplements
- HormoneSynergy® Resource Library
- HormoneSynergy® Longevity Medicine Model
Video: Dr. Kathryn Retzler Explains Magnesium L-Threonate
Frequently Asked Questions
What does magnesium L-threonate powder support?
Magnesium L-threonate powder is commonly used to support cognitive function, memory, mental clarity, relaxation and a healthy sleep-wake cycle.* The powder format provides an alternative for people who prefer mixing their daily serving into a beverage rather than taking capsules.
What is Magtein®?
Magtein® is a patented form of magnesium L-threonate developed for use in brain-health and cognitive-support formulations. It is selected for its intended role in supporting magnesium availability relevant to healthy neurological function.*
How is magnesium L-threonate different from magnesium glycinate?
Magnesium L-threonate is generally selected for brain and cognitive-support formulations. Magnesium glycinate is more commonly used for general magnesium support, muscle function, relaxation and gastrointestinal tolerability. Neither is universally better; the appropriate form depends on the intended use.
Is magnesium L-threonate powder primarily a sleep supplement?
No. Although the formula may support relaxation and a healthy sleep-wake cycle, it is primarily positioned as a brain-focused magnesium product for cognitive and neurological support. It is not a sedative and should not be expected to treat an underlying sleep disorder.*
Does the powder contain a flavor?
This product is described as unflavored. Confirm the complete ingredient list on the current label to determine whether it contains any sweeteners, flavoring agents or other ingredients.
How should I take this supplement?
Mix 1 scoop into 8 ounces of water or another beverage, or use as directed by your healthcare professional. Confirm the product label for food-timing or divided-dose instructions.
How long does one container last?
At 1 scoop daily, the container lasts the same number of days as the listed number of servings. For example, 30 servings would provide approximately a 30-day supply.
Can I combine this with another magnesium supplement?
Using more than one magnesium product may increase total supplemental magnesium intake. A healthcare professional can help determine whether combining forms is appropriate based on your diet, health history, kidney function and current medications.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. The information provided is for educational purposes and is not a substitute for individualized medical advice.