Pack size: 30 sachets

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Doctor Life

Magtein®, 30 sachets

Magnesium L-Threonate 2083 mg

149,99 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® sachets provide branded magnesium L-threonate, an ingredient evaluated in randomized human studies of memory, cognitive function, and sleep.

At the heart of the formula / Magtein®, 30 sachets

Thoughtful support. Clear purpose.

01Supports normal nervous system function
02Helps maintain normal psychological function
03Helps reduce tiredness and fatigue
04Supports normal energy metabolism
05Focused support for memory, concentration, and everyday mental performance
06Magtein®, a branded ingredient examined in randomized human trials
07Premeasured sachets make daily use simple

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Magtein®, 30 sachets

Made for your daily routine.

One sachet provides 2,083 mg of Magtein®, supplying 150 mg of magnesium, or 40% of the EU NRV. The first number is the weight of the magnesium L-threonate ingredient; the second is its elemental magnesium content. A clinical study used 2 g of Magtein® daily, an amount close to—but not identical to—this serving.

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.

Each sachet contains a measured serving, making it easy to use at home or on the go. Mix with water or another liquid as directed. The ingredient list contains Magtein®, natural flavors, and citric acid.

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Magtein®, 30 sachets

Why choose Magtein®?

Magtein® is a branded magnesium L-threonate ingredient studied in randomized human trials. Research has examined working and episodic memory, overall cognitive performance, reaction time, and selected sleep measures. These studies provide ingredient-specific evidence, although results vary and do not guarantee the same benefits for every user.

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Magtein®, 30 sachets

What does research say about Magtein®?

A randomized trial in 100 adults studied 2 g of Magtein® daily for six weeks and reported improvements in selected cognitive measures compared with placebo. The amount is close to the 2,083 mg in one sachet. Other trials have examined selected sleep outcomes and a Magtein®-based formula in adults aged 50–70. These studies used defined populations and formulations, so their findings should be interpreted within those limits.

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 sachet
Magtein® Magnesium L-Threonate	2083 mg
providing magnesium (elemental)	150 mg (40%*)

*NRV: Nutrient Reference Value

Full ingredient list

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

How to use

Part of your daily rhythm.

How to use

Mix 1 sachet into approximately 200 mL of water or another liquid.

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.

These references include a randomized trial using 2 g of Magtein® daily, close to the 2,083 mg in one Doctor Life sachet. Other studies examine sleep and cognition in older adults. Findings relate to the populations and formulations tested.

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 trial, 100 adults ages 18–45 with unsatisfactory sleep quality took 2 g of Magtein® daily or a placebo. The Magtein® group showed greater improvement in overall cognitive scores, particularly working and episodic memory, as well as reaction time. The studied amount is close to the 2,083 mg in one Doctor Life sachet; the finished product was not tested.

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.

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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 trial in adults ages 50–70 examined MMFS-01, a formula whose main ingredient was 1,800 mg of Magtein® daily. The composite cognitive score improved compared with placebo. The study tested a different combined formula, so the results cannot be attributed to Magtein® alone.

Read publication ↗

FAQ / Magtein®, 30 sachets

Good questions. Clear answers.

Talk to us ↗

Why does a sachet contain 2,083 mg of Magtein® but only 150 mg of magnesium?

2,083 mg is the weight of the full magnesium L-threonate ingredient. It supplies 150 mg of elemental magnesium, equivalent to 40% of the EU NRV. The two figures describe different things and should not be compared as if they were both pure magnesium.

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.

How does one sachet compare with the amount studied?

A six-week randomized, double-blind trial in 100 adults used 2 g of Magtein® daily and reported improvements in selected cognitive measures compared with placebo. One Doctor Life sachet contains 2,083 mg, a similar but not identical amount. This does not guarantee the same result for an individual user.

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 trademarked magnesium L-threonate ingredient with its own clinical research. The name identifies the ingredient used in the formula.

What is the advantage of a sachet over a larger tub of powder?

Each sachet provides a ready-measured serving, so there is no need for a scoop. It is convenient for travel, work, and a consistent daily routine.

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