What is myBrainCo MultiMag Hydration and who is it for?
myBrainCo MultiMag Hydration is a comprehensive magnesium and electrolyte complex formulated to support muscle function, recovery, and hydration during and after physical activity. This 375g powder delivers 365mg of elemental magnesium from four bioavailable forms, combined with Beta-Hydroxy Beta-Methylbutyrate (HMB), electrolytes, taurine, and L-carnitine tartrate. It is designed for athletes, active individuals, and anyone engaged in regular exercise who seeks nutritional support for muscle recovery and sustained hydration.
Fairfield Nutrition Thoughts
We selected MultiMag Hydration because it addresses a critical gap in sports nutrition: the need for bioavailable magnesium in forms that actually work during and after training. Most generic magnesium supplements use oxide or citrate, which can cause digestive upset during exercise. This formula uses four distinct magnesium forms, each chosen for specific physiological roles, paired with HMB and taurine to support the complete recovery picture.
Why choose this specific formulation?
Standard sports hydration products typically rely on a single magnesium form and minimal additional support. MultiMag Hydration differs fundamentally in its approach. The four bioavailable magnesium forms (magnesium glycinate, magnesium taurate, magnesium malate, and magnesium citrate) are each suited to different metabolic roles: glycinate supports nervous system function, taurate supports cardiac and muscle function, malate supports energy production, and citrate supports cellular processes. This multi-form approach is distinct from single-form magnesium supplements, which cannot address all these pathways simultaneously.
The inclusion of HMB is particularly relevant for individuals engaged in resistance training or high-intensity exercise. Unlike basic electrolyte powders, this formula recognises that muscle recovery involves both mineral balance and leucine metabolite support. The addition of L-carnitine tartrate further distinguishes this product, as it supports the mitochondrial energy systems that power both exercise performance and post-workout recovery. Taurine, present in high concentrations, supports cellular hydration and muscle contractile function in ways that sodium and potassium alone cannot.
How does it work?
Think of magnesium as the mineral that keeps every cellular system running smoothly. During exercise, muscles contract repeatedly, burning through ATP (cellular energy). Magnesium is essential for both producing ATP and allowing muscles to relax after contraction. Without adequate magnesium, muscles remain tense, cramps develop, and recovery stalls. MultiMag Hydration floods the system with magnesium in forms your body can actually use, while HMB and L-carnitine support the energy systems that power this process.
Magnesium and Muscle Function: Magnesium binds to ATP, making energy available for muscle contraction and relaxation. During intense training, magnesium demand increases significantly. The four magnesium forms in this formula work synergistically: glycinate and taurate support muscle relaxation and nervous system regulation, while malate and citrate support energy production and cellular processes. This multi-form approach ensures magnesium reaches the systems that need it most.
HMB and Muscle Preservation: Beta-Hydroxy Beta-Methylbutyrate is a metabolite of the amino acid leucine. During exercise, muscle protein breaks down. HMB helps preserve lean muscle mass by supporting the muscle protein synthesis pathway, meaning your body recovers muscle tissue more efficiently rather than catabolising it for energy. This is particularly valuable during high-intensity training or caloric restriction.
Electrolyte and Taurine Support: Hydration is not simply water retention—it is the movement of minerals and nutrients across cell membranes. Electrolytes (sodium, potassium, magnesium) maintain osmotic balance, allowing cells to hold water and function optimally. Taurine, present in high concentration, supports cellular hydration at the mitochondrial level and enhances the contractile force of muscle tissue. Together, these create an environment where muscle function is sustained and recovery is accelerated.
What can this support?
This formula provides nutritional support for:
Strength Training and Resistance Exercise: Magnesium and HMB work together to support muscle recovery following resistance training, while taurine and L-carnitine support the energy systems that power strength development.
High-Intensity Interval Training (HIIT): During intense efforts, magnesium and electrolyte demand spikes. This formula delivers bioavailable magnesium alongside electrolytes to maintain muscle function and hydration during demanding sessions.
Endurance Activities: Athletes engaged in running, cycling, or team sports experience prolonged magnesium and electrolyte loss through sweat. The comprehensive mineral profile supports sustained performance and faster recovery between sessions.
Post-Workout Recovery: The combination of magnesium, HMB, taurine, and L-carnitine supports the metabolic processes involved in muscle repair and energy restoration following training.
Muscle Cramps and Tension: Magnesium is the primary mineral involved in muscle relaxation. Individuals prone to cramping or muscle tension during or after exercise may find this formula particularly useful for maintaining adequate magnesium status.
Active Individuals Seeking Comprehensive Support: Whether you are a competitive athlete, gym-goer, or someone maintaining an active lifestyle, this formula provides multi-system nutritional support for muscle function, energy production, and hydration balance.
Common questions
How is this different from standard electrolyte drinks?
Most electrolyte beverages focus on sodium and potassium with minimal magnesium. MultiMag Hydration reverses this priority, delivering 365mg of elemental magnesium in four bioavailable forms, alongside HMB and taurine. Standard drinks often lack the amino acid and metabolite support needed for muscle recovery—this formula addresses the complete picture.
Can I use this during exercise or only after?
This formula is designed to be used before, during, or after training. The electrolyte profile supports hydration during activity, while the magnesium, HMB, and taurine support both performance and recovery. Mixing one serving in water or a beverage during training can help maintain electrolyte balance and reduce cramping risk.
What does HMB do, and why is it included?
HMB (Beta-Hydroxy Beta-Methylbutyrate) is a metabolite of leucine that supports muscle protein synthesis and helps preserve lean muscle mass during and after training. It is particularly valuable during high-intensity exercise or when training in a caloric deficit, as it reduces muscle protein breakdown.
Why four different magnesium forms instead of just one?
Each magnesium form has distinct physiological roles. Magnesium glycinate supports nervous system function and muscle relaxation without laxative effects. Magnesium taurate supports cardiac and skeletal muscle function. Magnesium malate supports ATP production and energy metabolism. Magnesium citrate supports cellular processes. Using all four ensures comprehensive magnesium delivery across multiple systems, rather than relying on a single form that may not address all your needs.
Is this suitable for vegetarians and vegans?
Yes. MultiMag Hydration is formulated without animal-derived ingredients and is suitable for plant-based diets.
How often should I use this, and can I use it daily?
This formula is designed for regular use, particularly on training days. Many active individuals use it daily as part of their recovery routine. Follow the manufacturer’s suggested use guidelines and adjust based on your training intensity and individual response.
Key Features
- 365mg of elemental magnesium from four bioavailable forms: magnesium glycinate, magnesium taurate, magnesium malate, and magnesium citrate
- Clinically dosed Beta-Hydroxy Beta-Methylbutyrate (HMB) for muscle preservation and recovery support
- Comprehensive electrolyte profile to support hydration and cellular function
- L-carnitine tartrate to support mitochondrial energy production and muscle function
- High-dose taurine for cellular hydration and muscle contractile support
- Powder format for flexible dosing and easy mixing into beverages
- Unflavoured, allowing seamless integration into water, juice, or sports drinks
Suggested Use
Mix one serving (as directed by manufacturer) with 200-300ml of water or your preferred beverage. Can be used before, during, or after training. For optimal results, use consistently as part of your training and recovery routine. Always follow the manufacturer’s directions for use and consult with a healthcare practitioner if you have specific health conditions or are taking medications.
Ingredients (per serving)
- Magnesium (from magnesium glycinate, magnesium taurate, magnesium malate, magnesium citrate) – 365mg elemental magnesium
- Beta-Hydroxy Beta-Methylbutyrate (HMB)
- Taurine
- L-Carnitine Tartrate
- Electrolytes (sodium, potassium, magnesium)
This product is formulated without artificial colours, flavours, or sweeteners. Always read the label. Follow the directions for use.
These statements have not been evaluated by the TGA. This product is not intended to diagnose, treat, cure, or prevent any disease.
















