Pack size: 90 g

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Doctor Life

Optimized Singles

Magtein® Powder

Tropical Flavor

186,99 zł

Supports normal nervous system function
Helps maintain normal psychological function
Helps reduce tiredness and fatigue

Overview

Magnesium chosen for its form and the research behind it. Magtein® Magnesium L-Threonate uses a branded ingredient evaluated in randomized human studies of memory, cognitive function, and sleep. A considered choice for people who look beyond the number of milligrams.

At the heart of the formula / Magtein® Powder

Thoughtful support. Clear purpose.

01Supports normal nervous system function
02Helps maintain normal psychological function
03Helps reduce tiredness and fatigue
04Supports normal energy metabolism
05Supports normal muscle function and electrolyte balance
06Daily magnesium in a branded form clinically studied for cognition and sleep
07Tropical-flavored powder for a regular routine without swallowing several capsules

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Magtein® Powder

Made for your daily routine.

Two level scoops provide 2,083 mg of Magtein®, including 150 mg of elemental magnesium—40% NRV. The larger figure is the weight of magnesium L-threonate. A cited human trial used 2 g of Magtein® daily, close to this serving, although it did not test the finished Doctor Life product.

Magnesium supports normal nervous system and psychological function, energy metabolism, and the reduction of tiredness. It also contributes to muscle function, electrolyte balance, and healthy bones and teeth. Magtein® provides an identified magnesium form with its own clinical research.

Mix the powder into approximately 200 mL of water. The tropical-flavored formula contains Magtein®, natural flavors, and citric acid. The label also states that it is free from soy, gluten, and GMOs.

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Magtein® Powder

Why choose Magtein®?

Magtein® is branded magnesium L-threonate. Human randomized trials have examined working and episodic memory, overall cognition, reaction time, and selected sleep and daytime function measures. The results depend on the population, dose, and formulation studied.

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Magtein® Powder

What does research say about Magtein®?

A six-week randomized trial in 100 adults used 2 g of Magtein® daily and reported greater improvements in overall cognition, working and episodic memory, and reaction time than placebo. The amount is close to this product’s 2,083 mg serving. Another trial assessed sleep and daytime function; an earlier study in adults ages 50–70 tested a combined formula containing Magtein®. These studies do not establish the effects of the finished Doctor Life powder.

Ingredients / Doctor Life

Every ingredient. Clearly explained.

Each ingredient, its form and quantity — in one place.

Ingredient amounts for the servings shown in the table.
Ingredient	1 scoop	2 scoops
Magtein® magnesium L-threonate	1000 mg	2000 mg
Magnesium	77.5 mg (20.5%*)	155 mg (41%*)

*NRV: Nutrient Reference Value

Full ingredient list

Magnesium (as Magtein® magnesium L-threonate), natural flavors, acidity regulator: citric acid.

How to use

Part of your daily rhythm.

How to use

Mix 2 level scoops with approximately 200 mL of water.

Important information

Do not exceed the recommended daily serving. Food supplements should not replace a varied diet. A balanced diet and a healthy lifestyle are recommended. Store at room temperature, away from sunlight and out of reach of young children.

Science & sources

Understand the formula.

Magtein® has its own clinical research beyond the general literature on magnesium. Particularly relevant here is a randomized study using 2 g daily, close to the 2,083 mg in this Doctor Life serving. Further studies examine sleep and cognitive function in older adults.

These publications concern the studied ingredients or formulas. They do not all evaluate the finished Doctor Life product, and research results do not guarantee individual outcomes.

01The effects of magnesium L-threonate (Magtein®) on cognitive performance and sleep quality in adults: a randomised, double-blind, placebo-controlled trial

Adrian L. Lopresti, Stephen J. Smith

Frontiers in Nutrition (2026), 12, 1729164. DOI: 10.3389/fnut.2025.1729164; PMID: 41601871.

In a six-week randomized, double-blind study, 100 adults ages 18–45 received 2 g of Magtein® daily, or a placebo. The Magtein® group showed greater improvement in the overall NIH Toolbox cognitive score, with particularly clear findings for working and episodic memory, along with faster reaction times. The 2 g amount studied is close to the 2,083 mg in this Doctor Life product's daily serving.

Read publication ↗

02Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial

Heather A. Hausenblas, Tarah Lynch, Stephanie Hooper, Aahana Shrestha, Doug Rosendale, Jennifer Gu

Sleep Medicine: X (2024), 8, 100121. DOI: 10.1016/j.sleepx.2024.100121; PMID: 39252819.

In a randomized, double-blind study, 80 adults ages 35–55 with sleep difficulties took 1 g of Magtein® daily for 21 days. Oura ring measurements showed favorable differences in measures including deep and REM sleep scores. Questionnaires also indicated improvements in morning function, energy, productivity, mood, and mental alertness. The ingredient was well tolerated.

Read publication ↗

03Efficacy and Safety of MMFS-01, a Synapse Density Enhancer, for Treating Cognitive Impairment in Older Adults: A Randomized, Double-Blind, Placebo-Controlled Trial

Guosong Liu, Jason G. Weinger, Zhong-Lin Lu, Feng Xue, Safa Sadeghpour

Journal of Alzheimer's Disease (2016), 49(4), 971-990. DOI: 10.3233/JAD-150538; PMID: 26519439.

A 12-week randomized, double-blind study in adults ages 50–70 examined MMFS-01, a formula whose main ingredient was 1,800 mg of Magtein® daily. Compared with placebo, the formula significantly improved a composite cognitive score. The study complements more recent research by examining Magtein® in older adults.

Read publication ↗

FAQ / Magtein® Powder

Good questions. Clear answers.

Talk to us ↗

Why does the front say 2,083 mg Magtein® while the table lists 150 mg magnesium?

The 2,083 mg figure is the weight of the complete Magtein® magnesium L-threonate compound. It provides 150 mg of elemental magnesium, or 40% NRV.

How does Magtein® differ from magnesium citrate or bisglycinate?

Magtein® has its own randomized human studies of cognition and sleep. That gives it a distinct research focus, but does not establish that it is superior to citrate or bisglycinate for every purpose.

Is 150 mg of magnesium enough?

The daily serving provides 40% NRV as 2,083 mg of Magtein®. That compound amount is close to the 2 g used in a cited trial. Suitability depends on your overall intake and needs; a matching study amount does not guarantee a specific result.

Does the 2,083 mg serving relate to human research?

A randomized, double-blind trial in 100 adults used 2 g of Magtein® daily for six weeks. It reported greater improvements in overall cognitive score, working and episodic memory, and reaction time than placebo. The amount is close to the daily serving, but the finished Doctor Life product was not tested.

Has Magtein® been studied for sleep too?

Yes. A 21-day randomized trial in 80 adults with sleep difficulties examined selected sleep measures and morning function, energy, productivity, mood, and mental alertness. Findings relate to the studied preparation and population.

Is Magtein® an identified patented ingredient?

Magtein® is a protected trade name for magnesium L-threonate, associated with patented technology. The Doctor Life label identifies it as a trademark licensed exclusively by ThreoTech LLC.

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