There are supplements that support your body. There are supplements that support your mind. And then there are the rare formulas that do both at the same time, through two distinct and scientifically validated mechanisms, in a single daily scoop.
1UP Nutrition's Creatine + Magnesium L-Threonate is that formula. Here is everything you need to know about what it is, what each ingredient does, why they work better together, and how to take it to get the most out of it.
What Is This Product?
Creatine + Magnesium L-Threonate is a two-ingredient, high-impact formula built around two of the most well-researched compounds in sports and cognitive science.
The first ingredient, 5g of Creatine Monohydrate, is the gold standard of performance supplementation. The second, 1,000mg of Magnesium L-Threonate as the patented Magtein form, is the most advanced and bioavailable form of magnesium available, specifically formulated to cross the blood-brain barrier and support cognitive function at the neurological level.
Together, they address the two variables that limit most people's performance: physical output and mental sharpness. One scoop, 10 grams, 30 servings per container.
Ingredient 1: Creatine Monohydrate (5,000mg)
What It Is
Creatine Monohydrate is a naturally occurring compound found in muscle tissue and produced in small amounts by the body from amino acids. It has been studied extensively for over three decades and is consistently recognized as the most effective and safest performance supplement available.
How It Works
Creatine's mechanism is precise and well understood. Your muscles use a molecule called ATP as their primary energy source during high-intensity effort. ATP is consumed rapidly during explosive movements, heavy lifts, and sprint-intensity exercise, and your body can only store a limited amount at any one time.
Creatine is stored in muscle cells as phosphocreatine, which donates a phosphate group to replenish ATP during high-intensity effort. The more phosphocreatine your muscles have available, the faster ATP is regenerated, and the longer you can sustain peak-intensity output before fatigue sets in.
Supplementing with 5g of creatine monohydrate daily saturates your muscle phosphocreatine stores over time, increasing your capacity for high-intensity work and directly improving strength, power, and performance.
Ingredient 2: Magnesium L-Threonate as Magtein (1,000mg, providing 72mg elemental magnesium)
What It Is
Magnesium is an essential mineral involved in over 300 enzymatic reactions in the body, including energy production, muscle function, nerve transmission, and protein synthesis. It is also one of the most commonly deficient minerals in the modern population, with a large percentage of adults failing to meet their daily requirements through diet alone.
But not all forms of magnesium are equal, and this distinction matters enormously for cognitive benefits specifically.
Most magnesium supplements, including magnesium oxide, citrate, glycinate, and malate, are effective for supporting general magnesium status, muscle function, and sleep quality. However, they have very limited ability to cross the blood-brain barrier, the highly selective membrane that controls what enters the brain from the bloodstream.
Magnesium L-Threonate is different.
How Magtein Works
Magtein is a patented form of magnesium developed by researchers at MIT specifically to address the blood-brain barrier limitation. By binding magnesium to L-threonate, a metabolite of vitamin C, the compound achieves significantly higher transport across the blood-brain barrier than any other magnesium form currently available.
The result is a meaningful increase in brain magnesium levels, something that has proven extremely difficult to achieve with conventional magnesium supplementation.
Why does brain magnesium matter? Magnesium plays a critical role in synaptic function, the communication between neurons that underlies all cognitive processes. It regulates NMDA receptors, which are central to learning and memory formation. It supports the density and plasticity of synaptic connections, which determines how efficiently the brain processes information and forms new memories.
When brain magnesium levels are elevated through Magtein supplementation, synaptic density increases. Neural communication becomes more efficient. The brain's capacity for focus, working memory, learning, and cognitive flexibility improves measurably.
Why These Two Ingredients Work Better Together
The pairing of creatine monohydrate and Magnesium L-Threonate is more than a convenient combination. It is a genuinely synergistic one.
Creatine's energy replenishment mechanism operates in both muscle cells and brain cells. The brain is one of the most energy-demanding organs in the body, consuming approximately 20% of total daily energy despite representing only about 2% of body weight. Brain cells use ATP continuously for neural signaling, and creatine supports ATP regeneration in neurons just as it does in muscle tissue. Research on creatine and cognitive function shows benefits for memory, mental fatigue resistance, and processing speed, particularly under conditions of stress or sleep deprivation.
Magtein operates at the level of synaptic function and neural plasticity, improving the quality of brain cell connections and the efficiency of information processing.
Together, creatine supports the energy supply of the brain while Magtein enhances the structural and functional efficiency of neural networks. The result is a formula that supports both the fuel and the machinery of cognitive performance simultaneously, alongside the well-established physical performance benefits of creatine monohydrate.
Physical performance and cognitive performance are not separate goals. They are interconnected. Training harder requires mental focus and the ability to maintain intent and intensity under fatigue. Cognitive work requires mental energy that is directly supported by the same cellular energy systems creatine optimizes. This formula addresses both.
When to Take It and How to Use It
On Training Days
Take one scoop 20-30 minutes before your workout, mixed with 8-12 ounces of cold water. This timing allows creatine to be available for ATP replenishment during your session and positions the Magtein's cognitive support to enhance focus and mental sharpness throughout your training.
On Rest Days
Consistency is the most important factor with both creatine and Magtein supplementation. Take one scoop in the morning with water on non-training days to maintain muscle creatine saturation and continue supporting brain magnesium levels. Morning timing is preferred on rest days because Magtein's effects on neural function are useful during the cognitively active hours of your day.
General Timing Notes
Creatine monohydrate does not require precise timing to be effective. The most important thing is taking it daily without skipping. Magtein's cognitive benefits compound over time with consistent use, with most users reporting noticeable improvements in focus and memory after two to four weeks of daily supplementation. Neither ingredient requires cycling or loading. Simply use one scoop per day consistently.
What to Expect
Weeks 1-2: Creatine is saturating your muscle cells. You may notice slightly improved energy during high-intensity training and reduced fatigue at the end of hard sessions. Magtein is beginning to elevate brain magnesium levels.
Weeks 3-4: Strength and power output begin to improve noticeably. Cognitive benefits from Magtein become more apparent, including sharper focus during training, better working memory, and improved mental clarity throughout the day.
Month 2 and beyond: Full creatine saturation is sustained. Lean muscle gains are accumulating. Magtein's effects on synaptic density and neural plasticity continue to develop, with memory, focus, and cognitive flexibility continuing to improve with ongoing use. The compounding effect of both ingredients working simultaneously becomes increasingly apparent.
