• FitNeuro supplement bottle, front label.
  • Fitties FitNeuro supplement bottle with supplement facts on a white background
  • Fitties FitNeuro supplement bottle with directions on a white background
  • Closeup of Fitties FitNeuro bottle and capsules
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FitNeuro | Ultra-Premium Cognitive Support with Magtein® Magnesium L-Threonate

Magtein is a form of magnesium known to cross the blood-brain barrier.

$49.00
30 day supply $1.63 per day
*
    • Magtein magnesium L-threonate, a form of magnesium known to cross the blood-brain barrier
    • Supports cognitive health and healthy synapse number and function
    • Supports stress management, sleep quality, and a healthy mood
    • Three quality forms of magnesium for brain and body, not the cheap oxide plenty of brands use

FitNeuro is a cognitive support formula built on Magtein magnesium L-threonate, a form of magnesium known to cross the blood-brain barrier, plus two highly absorbable forms for whole-body magnesium.

Subscriptions renew automatically at the frequency and price you select until you cancel. Change, skip, or cancel anytime from your account.
FitNeuro supplement bottle, front label.
Fitties FitNeuro supplement bottle with supplement facts on a white background
Fitties FitNeuro supplement bottle with directions on a white background
Closeup of Fitties FitNeuro bottle and capsules
Fit female athlete holding bottle of Fitties FitNeuro

  • Brain icon indicating a thinking or focus-related feature

    Magnesium That Reaches Your Brain

    Magtein is the patented L-threonate form of magnesium, known to cross the blood-brain barrier and developed from research at MIT.

  • Gauge icon indicating a stress response feature

    Not the Cheap Stuff

    Skip the magnesium oxide. FitNeuro uses Magtein plus two highly absorbable forms.

  • Sleep and clock icon indicating a sleep quality feature

    Built for Your Synapses

    Magtein supports healthy brain magnesium levels and healthy synapse number and function.

  • Head profile icon indicating a mood-related feature

    More Than the Brain

    It also supports stress management, sleep quality, and a healthy mood.
Fit female athlete holding bottle of Fitties FitNeuro

Most Magnesium Is the Cheap Kind.

Your brain runs on magnesium, but getting it there is harder than the supplement aisle lets on. Magnesium L-threonate came out of research at MIT aimed at raising brain magnesium (Slutsky et al., 2010); it’s known to cross the blood-brain barrier and supports healthy synapse number and function. FitNeuro leads with Magtein, the patented version, then rounds it out with two highly absorbable forms so the rest of your body gets magnesium too. Many people in the US get less magnesium than recommended (NIH Office of Dietary Supplements).

Who FitNeuro Is For

Built for people who want magnesium that actually does something for their brain.

  • Who It’s For

    • Anyone serious about brain health and cognition who wants magnesium that reaches the brain
    • People who also want magnesium’s support for stress, sleep, mood, and overall health

  • Who It’s Not For

    • Anyone who just wants basic magnesium for cramps, since this is a premium brain formula
    • People expecting an instant jolt, since FitNeuro is made for consistent daily use

What’s Inside

Three forms of magnesium, each chosen for a reason. No cheap oxide making up the weight.

Magtein Magnesium L-Threonate

1g of the patented, MIT-developed L-threonate form, known to cross the blood-brain barrier. The hero of the formula.

Albion® Di-Magnesium Malate

A highly absorbable magnesium bound to malic acid, for everyday magnesium status.

TRAACS® Magnesium Lysinate Glycinate Chelate

A chelated magnesium bound to amino acids, highly absorbable, for everyday magnesium status.

Formulated to exclude: wheat, gluten, corn, yeast, soy, animal and dairy products, fish, shellfish, peanuts, tree nuts, egg, sesame, ingredients derived from genetically modified organisms (GMOs), artificial colors, artificial sweeteners, and artificial preservatives.

Other ingredients include: capsule (hypromellose and water), hydroxypropyl cellulose, ascorbyl palmitate, and silica.

What to Expect From FitNeuro

Magnesium is a daily habit, not a single dose. Here’s the honest version.

  • Clock icon for the first phase

    From Day 1

    Start with three capsules a day. Magtein is known to cross the blood-brain barrier, and this is groundwork, not a jolt.

  • Calendar icon for the second phase

    Every Day

    Taken every day, FitNeuro supports healthy brain magnesium levels, healthy synapse number and function, and cognitive health. Steady daily use is the whole point.

  • Layered blocks icon for the third phase

    Ongoing

    Many people in the US get less magnesium than recommended (NIH Office of Dietary Supplements), so the goal is to stay topped up, for your brain and the stress, sleep, and mood magnesium supports.
Fit female athlete catching a bottle of Fitties FitNeuro

How to Use FitNeuro

  • Take 3 capsules
  • Once or twice daily, with or without food

Every day, three capsules once or twice daily. Many people take it in the evening, since magnesium supports sleep, but any time works.

Pro Tip. Take three capsules once or twice daily. Two servings give 2g of Magtein.

How FitNeuro Compares

Plenty of magnesium supplements are cheap oxide. FitNeuro is three quality forms, including Magtein, known to cross the blood-brain barrier. Different league.

Magtein L-threonate (crosses into the brain)
Three quality magnesium forms
No cheap magnesium oxide
Supports cognition, stress, sleep, and mood
Vegetarian and corn-free, full exclusion list on the label
FitNeuro supplement bottle, front label.

FitNeuro

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FitNeuro

Typical Magnesium Supplements

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Where FitNeuro Fits Your Stack

FitNeuro covers the brain. Pair it with cellular defense, a foundation, and a little calm.

  • FitProtect: cellular antioxidant support, plus support for neurologic and cognitive health.
  • FitNutrients+: the daily vitamin and mineral foundation under everything.
  • FitWell: calm and mood support to round out the nervous-system picture.
Find Your Stack

Frequently Asked Questions

What is magnesium L-threonate (Magtein)?

Magnesium L-threonate, sold as Magtein, came out of research at MIT aimed at raising brain magnesium (Slutsky et al., 2010). It’s known to cross the blood-brain barrier, and it supports healthy brain magnesium levels and cognitive health.

Why does the form of magnesium matter?

Forms differ in how well they’re absorbed. Forms that dissolve well in liquid absorb better, and several tend to be more bioavailable than magnesium oxide (NIH Office of Dietary Supplements). FitNeuro uses three highly absorbable forms, led by Magtein, known to cross the blood-brain barrier.

What does FitNeuro do for the brain?

FitNeuro supports healthy brain magnesium levels with Magtein, and with them healthy synapse number and function and cognitive health.

Does FitNeuro help with stress, sleep, and mood?

Yes. Beyond the brain, magnesium supports a healthy stress response, sleep quality, and a balanced mood. FitNeuro’s magnesium supports these alongside its cognitive benefits.

What are the other two magnesium forms for?

Albion di-magnesium malate and TRAACS magnesium lysinate glycinate chelate are highly absorbable forms that support your overall magnesium status, That matters because many people in the US get less magnesium than recommended (NIH Office of Dietary Supplements).

How much FitNeuro should I take?

Take three capsules once or twice daily, providing 1 to 2g of Magtein and 200 to 400mg of elemental magnesium. Check with your healthcare provider if you take medication.

Will I feel FitNeuro right away?

No. FitNeuro isn’t a stimulant, so there’s no instant jolt. It’s made for consistent daily use.

Is FitNeuro vegetarian, and what does it exclude?

FitNeuro is vegetarian, though not vegan. The full exclusion list is on the label.

Can I stack Fitties products together?

Many Fitties products are designed to work together. Check each label so you don't double up on the same ingredient, such as caffeine or magnesium, and talk to your healthcare professional if you take medication. The Stack Builder can suggest a combination for your goals.

How are Fitties products made?

Every Fitties formula is manufactured in a GMP compliant facility. No low-grade shortcuts. Just ultra-premium ingredients, every one listed on the label.

What are the dietary and allergen details for each product?

Each product is different, and each product page lists what that formula is formulated to exclude, word for word from its label. No Fitties formula uses artificial colors. If something doesn't fit your dietary needs, you'll know upfront.

* 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.