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Muscle Growth

Peptistrong and Amino Acids

Strength-5

Name: Strength-5
Brand: Xendurance
SKU: S5
Price: 58.95 USD
Availability: InStock
Rating: 4.89 (66 reviews)

Strength Unleashed: Supercharge Growth, Reduce Muscle Breakdown, and Amplify Strength

Turbocharge Your Gains

Ignite Explosive Growth

Stay Hydrated as You Gain

Quickens Repair Mechanisms

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CERTIFIED
SUPPLEMENTS

Why You’ll Love It

Hungry for More Power? - Build serious muscle and supercharge your drive!*
Fear of Losing Muscle with Age? - Fight back with strength and stay vibrant!*
Rebuild Your Glutamine Reserves - Recharge your body and power up recovery quickly*
Added Rehydration - Replenish while optimizing muscle efficiency*

Why Complicate Your Gains? One Product Does It All - Crush your workouts with a single product packed with progress*

Description

Unlock Peak Performance with Strength-5: Peptistrong-Powered Amino Acid Blend for Increased Muscle Gains.

Peptistrong®
AI-Powered Peptide, Sourced from Fava Beans, Identified using State-of-the-Art Machine Learning Research to Harness Muscle Building and Performance*

Amino Acids
Branch Chain (BCAA) and Essential Amino Acids (EAA) to Support Athletes in Enhancing Muscle Growth, Strength, and Overall Physique*

HMB
Muscle Growth and Reduced Muscle Breakdown*

L-Glutamine
Speeds Muscle Repair after Workouts while Supporting Gut and Immune Health*

Electrolytes
Replenish Hydration, Boost Energy and Support Muscle Function*

Key Benefits

Boost Muscle Growth, Minimize Muscle Loss*
Combat Age-Related Muscle Decline While Supporting Healthy Aging*
Replenish Plasma Glutamine Levels Drained by Intense Physical Stress*
Restore Hydration, Elevate Energy, and Enhance Muscle Performance*
Formulated With More Strength-Amplifying Nutrients Than Any Other Supplement, Giving You the Ultimate Edge*

What's Inside

Peptistrong®
AI-Powered Peptide, Sourced from Fava Beans, Identified using State-of-the-Art Machine learning Research to Harness Muscle-Building and Performance Benefits*
Amino Acids
Branch Chain (BCAA) and Essential Amino Acids (EAA) to Support Athletes in Enhancing Muscle Growth, Strength, and Overall Physique*
HMB
Muscle Growth and Reduced Muscle Breakdown*
L-Glutamine
Speeds Muscle Repair after Workouts while Supporting Gut and Immune Health*
Electrolytes
Replenish Hydration, Boost Energy and Support Muscle Function*

Usage

One Scoop: For Pre, Intra, or Post Workout

Mix in 8-16 ounces of water or with your favorite powdered supplement. Sip throughout your workout.

The flavor is light and refreshing and mixes well with Creatine-JB as well as all other Xendurance powdered formulas.

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Strength-5

$58.95

Science Driven. Performance Gains.

Full Potency, Maximum Strength

Improves Muscular Strength and Energy Output

Optimizes force production and endurance through targeted training and recovery*

Rebuild Glutamine Reserves

Boosts plasma glutamine to counteract depletion from rigorous exercise, aiding muscle repair and immunity*

Counter Age-Related Muscle Loss

Mitigates muscle deterioration with targeted strength training and nutrition to enhance overall health in aging*

Rehydrate and Optimize Muscle Function

Replenishes fluids, increases vitality, and improves muscle efficiency for peak performance*

Loaded with Elite Muscle-Fueling Nutrients

Formulated with a unique combination of strength-supporting ingredients for optimal gains*

Science Driven Results

Formulated with research-driven nutrients to maximize strength and optimize muscle gains*

Trusted Supplements Since 1998

Justin Medieros

"I sip on this during every training session now"

Jacob Heppner

"Great taste, love it during my lifts"

Bailey Cook

"Really feel it in my recovery and very important to me to get extra amino acids in my diet"

Research Substantiates Strength Gains

Clinical data validates the effectiveness of the Peptistrong® in Strength-5

Boosts Muscle Strength and Power

Peptistrong shown in two clinical published studies in men between 30-45 to improve power output, by up to 144%(2), and in men 18-30 to increase in performance by up to 54%(1)

Train More, Recover Faster

Peptistrong shown in studies(1,2)to increase strength recovery by 47%, reduce muscle soreness and a return to higher than baseline strength levels after fatigue

Generate More Muscle Compared to Whey

Peptistrong shown in clinical studies(1)to increase protein synthesis 4x greater than after the same amount of whey protein.

Lower Myostatin

Prevent inhibition of muscle recovery, keep the muscle you have and reduce the degredation and fatty change seen in ageing(1,3)

Maintain Healthy Inflammation

After 2 weeks use of Peptistrong. Reduces exercise induced inflammation(2,3).

Peptistrong® Clinical Studies

1. The Journal of Nutrition 2023 153;6:1718-1729 Vicia faba Peptide Network Supplementation Does Not Differ From Milk Protein in Modulating Changes in Muscle Size During Short-Term Immobilization and Subsequent Remobilization, but increases Muscle Protein Synthesis Rates During Remobilization in Healthy Young Men

2. Kerr, Alish, et al. “Improved Strength Recovery and Reduced Fatigue with Suppressed Plasma Myostatin Following Supplementation of a Vicia faba Hydrolysate, in a Healthy Male Population.” Nutrients 15.4 (2023): 986.

3. Preclinical Evaluation of a Food-Derived Functional Ingredient to Address Skeletal Muscle Atrophy. Cal et al., Nutrients, 2020, Volume 12, Issue 8

Loaded with a superior stack of strength ingredients—no other supplement comes close.

Great tasting flavor! Mix with water or other Xendurance powder formulas

BENEFITS	XND	OTHERS
Peptistrong,AI-Powered Peptide, Sourced from Fava Beans, Identified using State-of-the-Art Machine learning Research to Harness Muscle-Building and Performance Benefits*
Nine Essential, Branch Chain (BCAA) Amino Acids (EAA) to Support Athletes in Enhancing Muscle Growth, Strength, and Overall Physique*
HMB helps reduce muscle loss and encourages muscle development*
L-Glutamine enhances gut and immune health, supports digestion, and speeds recovery by helping to restore glutamine levels after intense exercise*
Electrolytes; Sodium, Potassium, Magnesium to restore hydration & elevate energy*

Getting the most out of Strength-5

Frequently Asked Questions

What is PeptiStrong®?

PeptiStrong® is an innovative, plant based, AI-powered peptide, sourced from fava beans, these peptides are identified using state-of-the-art machine learning research to harness muscle-boosting benefits for workout and performance supplements.*

What benefits does HMB provide?

HMB (beta-hydroxy beta-methylbutyrate), a compound your body naturally forms by metabolizing leucine, offers impressive benefits as a supplement, particularly for supporting muscle health. Research highlights its ability to enhance muscle growth, especially in untrained individuals and older adults starting resistance training, while also reducing muscle breakdown in various scenarios, like during intense exercise or aging.

Additionally, HMB can boost exercise performance, making it a valuable tool for those looking to preserve or build muscle mass. Though its effects may vary based on training status and protein intake, it shines as a support for minimizing loss and promoting gains in specific groups, contributing to stronger, more resilient muscles.*

What are the benefits of taking L-Glutamine?

L-Glutamine, an amino acid naturally present in your body (not formed from leucine, unlike HMB), supports muscle repair, gut health, and immunity. L-Glutamine boosts gastrointestinal wellness, enhances gut barrier function, and speeds recovery from surgery, injury, or intense workouts by restoring glutamine levels depleted during physical stress.

It’s especially beneficial for athletes, those healing, or anyone aiming to maintain a healthy stomach lining and immune system.*

Can you combine Strength-5 with additional Xendurance supplements?

Strength-5 is designed to pair seamlessly with other Xendurance products, enhancing your fitness routine with synergistic benefits. It works hand-in-hand with Creatine-JB, as both boost muscle strength through complementary mechanisms—Strength-5 fuels power and endurance, while Creatine-JB amplifies energy and growth.

Its flavor profile and fine powder blend effortlessly with Hydro, Fuel-5, Fuel-5+, and Xendurance Proteins. Simply toss a scoop of Strength-5 and, say, Creatine-JB into your shaker, add your preferred amount of water, and shake for a smooth, tasty mix—crafted to integrate perfectly with these powders for maximum impact.*

How should you take Strength-5 for maximum results?

For maximum results, mix one scoop into 8-16 ounces of water or blend it with your go-to powdered supplement—think Creatine-JB or any Xendurance formula like Hydro or Fuel-5. Its light, refreshing flavor makes it a breeze to enjoy before, during, or after your workout.

Just shake it up, and you’re ready to power through or recover strong—it’s that simple and versatile!*

Does Strength-5 avoid the bitter taste typical of amino acid formulas?

Strength-5’s lemon-lime flavor delivers a crisp, refreshing burst that stands in stark contrast to the harsh, bitter taste of typical amino acid blends.

While most amino mixes leave an unpleasant aftertaste, this zesty, light profile feels invigorating and smooth, making it a welcome relief whether you’re powering through a workout or recharging after one.*

What are the benefits of each amino acid in Strength-5?

L-Tryptophan: Fuels the creation of vital neurotransmitters and hormones like serotonin and melatonin, enhancing mood balance and promoting restful sleep.*
L-Lysine: Crucial for avoiding niacin (Vitamin B) deficiencies and accelerating connective tissue recovery when levels drop.*
L-Methionine: Delivers sulfur and essential compounds to optimize metabolism and foster robust growth.*
L-Valine: Drives muscle performance, supports tissue repair, and keeps nitrogen levels steady in the body.*
L-Leucine: Ignites muscle protein synthesis and acts as a key energy driver for tissue building and repair.*
L-Isoleucine: Essential for regulating blood sugar, aiding muscle repair and growth, and sustaining energy.*
L-Threonine: Vital for antibody formation, strengthening immunity, and converting into glycine and serine as required.*
L-Phenylalanine: Sparks the production of hormones and neurotransmitters critical for top-notch nervous system function.*
L-Histidine: Supports tissue development and repair, forming proteins while maintaining muscle and nerve health, and producing histamine to aid immunity and digestion.*

Great Product

I have only been using this for about 3 weeks now but it seems to have increased my strength even in such a short amount of time.

Strength-5 is the supplement I needed

I use almost all XND supplements for years and I feel this is the I needed to complete my stack. Something I can use mainly intra workout but also outside training to aid in my recovery. Whatever XND makes its GOLD!

Thank you so much for your review! We are thrilled to hear that Strength-5 has been the missing piece in your supplement stack. We take pride in creating products that help our customers reach their fitness goals. We truly appreciate your support and hope to continue providing you with top-quality supplements. Keep crushing your workouts!

Strength 5 Great product

This is a great tasting product that mixes well. I use this during my workout mixed with xendurance carbs and it’s a great combination to fuel my training.

Thank you for taking the time to leave such a positive review for our Strength-5 product! We're thrilled to hear that you enjoy the taste and find it easy to mix. It's wonderful to know that our product has become a part of your workout routine and is helping with your training. We truly appreciate your support and hope to continue providing you with amazing results. Keep up the great work!

Noticeable difference

After a 3 week hiatus, I noticed an improvement in my training performance since I started taking this product. I really like XEndurance because it delivers what it promises.

Thank you for sharing your experience with Strength-5. We're so glad to hear that you noticed a difference in your training performance after taking it. We pride ourselves on delivering on our promises and we're happy to know that you've had a positive experience with XEndurance. Keep up the great work!

A great product!

At first I was skeptical to add another supplement to my regime. I was pleasantly surprised that it makes my workouts better. Highly recommend!

Thank you for sharing your experience with our Strength-5 product! We're happy to hear that it has exceeded your expectations and improved your workouts. We appreciate your recommendation and hope you continue to enjoy the benefits of our supplement. Keep up the great work!

Feel better, exercise better

Within days I started feeling better, stronger, even sleep better. I’ve used your other products & I buy w/confidence.

Thank you for your positive review of Strength-5! We are so happy to hear that you are feeling better and experiencing improvement in your overall health since using it. We strive to create products that make a positive impact on our customers' lives. We appreciate your continued support and confidence in our products. Keep up the great work!

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