More Than A Brand. It's A Lifestyle!

Pre Workout
Whey Protein
Hydration
BCAA
Fat Burner
Sleep Aid
Liver Support
Joint Aid
Vegan Protein
L-Glutamine
Creatine
Pre Workout
Whey Protein
Hydration
BCAA
Fat Burner
Sleep Aid
Liver Support
Joint Aid
Vegan Protein
L-Glutamine
Creatine

Unleash Your Potential

At Muscle Flex Nutrition, we’re more than just supplements. We’re a community of driven athletes who never settle. We exist to fuel your ambition and drive your success.

From setting new personal records to achieving life-changing transformations, we’re with you every step of the way.

✅ Recommended by Athletes and Coaches.

✅ Formulated with Premium, Proven Ingredients.

✅ Trusted for Peak Performance.

✅ No Compromise on Quality or Results.

Grab your FREE shaker with any bundle

Save Big With A Bundle

-23% sale
Advanced
Advanced £139.99 £179.99
Step up to the elite level with our Advanced Bundle—the ultimate collection of essential supplements crafted to take your workouts and recovery to their highest potential. If you're ready to reach new levels of strength, endurance, and recovery, this bundle has everything you need for total support, from intense workouts to optimal rest. Why Choose the Advanced Bundle? Powerful Pre-Workouts: Fuel each training session with Rampage and Evolution. These pre-workouts are designed to unleash raw energy, maximize muscle pumps, and drive your endurance, setting you up to push harder than ever before. Optimal Muscle Recovery & Growth: Foundation whey protein and BCAA together work to accelerate muscle repair and support lean muscle gain, ensuring you’re ready to perform at your best every day. Essential Hydration & Muscle Fuel: Stay hydrated and replenish critical nutrients with Refresh, an advanced electrolyte blend. Creatine Monohydrate supports enhanced strength and stamina, giving you the edge to break through performance plateaus. Enhanced Rest & Joint Health: After a tough workout, recovery is key. Hypnos promotes restful sleep and recovery, allowing your body to recharge fully, while Relief keeps your joints in top shape, so you can train consistently and confidently. With each element of the Advanced Bundle, you’re not just fuelling your body—you’re fortifying it, preparing it, and pushing its limits. For seasoned athletes or anyone seeking to make serious gains, this bundle provides unmatched support for peak fitness. This bundle is crafted for those who live to train, perform, and achieve. It’s your all-in-one solution to master advanced training goals. Embrace the intensity. Achieve greatness with the Advanced Bundle.
-19% sale
Beginner
Beginner £64.97 £79.99
The Muscle Flex Beginner Bundle is your ultimate starter pack, designed to lay a solid foundation for those just stepping into the world of fitness. This bundle includes three essential products that provide optimal support for muscle growth, hydration, and recovery: Foundation Whey Protein, Refresh Electrolyte Hydration, and Creatine Monohydrate. Foundation Whey Protein fuels lean muscle gains with high-quality protein, aiding in faster recovery post-workout. Refresh keeps you energized and hydrated with essential electrolytes, combating muscle cramps and dehydration. Finally, Creatine Monohydrate enhances strength and endurance, allowing you to train harder and longer from day one. This expertly curated bundle is designed to give you a complete start, supporting strength and endurance as you build your fitness journey. Make the most of your training sessions and set yourself up for success with the Beginner Bundle—your essentials for building a stronger, healthier you!
-18% sale
Complete Health
Complete Health £62.99 £75.99
Elevate your wellness routine with the Complete Health Bundle—a carefully curated collection designed to enhance your body’s resilience, support joint and liver health, improve hydration, and optimize restorative sleep. Tailored for anyone serious about maintaining peak physical health, this bundle provides essential tools to recover faster, feel rejuvenated, and maintain key areas of well-being.   Starting with Relief, this powerful joint health formula delivers targeted support to protect and nourish your joints, helping you stay active and reduce discomfort from workouts or daily wear and tear. Refresh boosts hydration with a precise blend of electrolytes, keeping you fueled and minimizing muscle cramps during and after workouts. Hypnos steps in as your nighttime ally, promoting restful sleep and faster recovery, so you wake up refreshed and ready to perform at your best. Finally, Barricade fortifies your liver health, offering key nutrients to detoxify and enhance liver function, crucial for anyone pushing their physical limits.   The Complete Health Bundle is more than just supplements—it’s a total health solution designed to help you feel your best from the inside out. Rediscover wellness and resilience with the Complete Health Bundle and stay at the top of your game every day.
-25% sale
Intermediate
Intermediate £75.99 £99.99
Are you ready to feel stronger, train harder, and see your hard work pay off? The Intermediate Bundle by Muscle Flex is meticulously crafted to elevate your workout experience, fuel your passion, and bring you closer to your fitness goals. This powerful combination of Rampage Pre-Workout, Foundation Whey Protein, Refresh Electrolyte Blend, and Creatine Monohydrate offers everything you need to step up your game, see noticeable results, and recover faster. Imagine walking into the gym with unstoppable energy and focus. Rampage, our high-intensity pre-workout, gives you the edge to conquer every set with confidence. Feel your muscles power through each rep and set with the additional strength boost provided by Creatine Monohydrate—a scientifically proven ingredient trusted by athletes worldwide. When the workout’s over, don’t just recover; rebuild and strengthen with Foundation Whey Protein, crafted to give your muscles the quality protein they crave. Stay refreshed and recharged throughout with Refresh Electrolyte Blend, which keeps your hydration in check and boosts endurance to keep you going longer. With the Intermediate Bundle, every workout session becomes an opportunity to excel. Whether you're working on building muscle, enhancing endurance, or improving recovery, this bundle supports every aspect of your training journey. Make today the day you take the leap—transform your workouts and elevate your results with the Intermediate Bundle from Muscle Flex!
-19% sale
Lean Machine
Lean Machine £69.99 £85.99
Get ready to rev up your metabolism and support lean muscle with the Lean Machine Bundle! Designed to fuel intense workouts, accelerate fat loss, and optimize recovery, this all-in-one bundle is the ideal solution for anyone looking to achieve a toned, lean physique. The bundle includes Refresh, a hydration powerhouse loaded with essential electrolytes to keep you fuelled and prevent muscle cramps during intense workouts. BCAA supports muscle preservation and faster recovery, so you can train harder without sacrificing gains. For powerful fat-burning, Blitz brings a high-energy blend that boosts metabolism and energy, helping you stay focused and energized as you work toward a leaner body. Finally, Lean Dream is your night-time ally, enhancing recovery and promoting restful sleep while supporting a healthy metabolism, so you wake up one step closer to your goals. With the Lean Machine Bundle, you'll experience the perfect blend of hydration, fat-burning, muscle preservation, and recovery support. Start your journey to a leaner, fitter you—unlock your potential with the Lean Machine Bundle today!
Mutant Stack
Mutant Stack £75.00
Designed by Rob Harriss | Built for the Hardcore   The Mutant Stack is not for the average gym-goer — it’s for the relentless. Designed by elite bodybuilder Rob Harriss, this brutal combination of Muscle Flex products is engineered to fuel insane energy, unshakable focus, and monstrous muscle growth.     🧬 What’s Inside:     Foundation Whey (1x) – Premium whey protein for fast recovery and lean muscle gain Rampage Pre-Workout (1x) – Aggressive energy, laser-sharp focus, and skin-splitting pumps Evolution Pre-Workout (1x) – Our high-performance formula for max endurance and drive BCAA (1x) – Essential aminos to boost recovery, fight fatigue, and preserve muscle       🧢 Why Choose The Mutant Stack?     Perfect for intense lifters chasing real, visible results Hand-selected by Rob Harriss for optimal synergy and impact Delivers fuel for training, recovery, and muscular domination       🔥 Launch Price:  £75     Unleash your inner mutant. This stack doesn’t whisper — it roars.

Recovery Isn't Optional. Neither Is BCAA!

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