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Endurox R4 ®
The Gold Standard For Muscle Recovery

Endurox R4 ®

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  • Gold Standard for Muscle RecoveryEndurox® R4®, with its patented 4:1 carb- protein ratio revolutionized the science of muscle recovery. Developed by six leading exercise scientists and supported by 18 peer-reviewed studies, Endurox R4 has become the recovery drink of choice for serious athletes in all sports. Compared to conventional recovery drinks, Endurox R4:

         • Increases glycogen replenishment by 128%
         • Decreases muscle damage by 36%
         • Increases protein synthesis by 400% (and 38% greater than a protein drink)
         • Increases endurance by 55% in subsequent workout

    Recover Faster. Recover Better. Come Back Stronger.

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The Recovery Drink that Advanced Sports Science

It is quite unusual in commercial development when a new product is deemed a major breakthrough and at the same time, advances our understanding of science. Endurox R4 created the recovery category and multiple studies conducted using Endurox R4 gave scientists enormous insight on the mechanisms underlying muscle recovery.

Every ingredient in Endurox R4 was specifically added to maximize recovery. It was the first product to show that a 4:1 ratio of carbohydrate to protein could accelerate recovery and raise the training level. Studies have reported a 55% increase in endurance in a subsequent workout 16 hours later and a 14% increase in muscle function 24 hours later.

Compared to a carbohydrate-only recovery beverage, Endurox R4 increases post-exercise protein synthesis or muscle repair, by 400%. What many athletes find surprising is that Endurox R4 actually increases protein synthesis 37% greater than a protein drink. The carb-protein combination activates multiple pathways for turning on protein synthesis, whereas a protein drink primarily activates a single pathway.

The combination of rapid-acting carbohydrates contained in Endurox R4 ensures fast absorption and transport to muscle cell within the 45-minute recovery window. The addition of glutamine to Endurox R4 helps replenish the muscle cell’s number one amino acid and the unique combination of antioxidants neutralizes free radical formation that occur as a natural consequence of exercise and are a major cause of muscle soreness.

5 Stars
Trail Running Guy
I have used other recovery products but find the protein/carb mix in Endurox R4 is best for me. I'm 64 years young and trail run about 30 - 40 miles per week. Recovery and staying healthy (injury free) is key for me! With Endurox R4 I find less stiffness and muscle soreness the day following a long/hard run, and I'm able to go back and hit the trails again with confidence. I'm very proud to say that I recently ran a 1/2 marathon and placed 1st in my age group, and set a new PB for that distance. I'll definitely continue using this product and would recommend you give it a try.
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Reviewed by:  from Ohio. on 11/16/2021
5 Stars
Amateur Endurance Athlete
My Go-To Recovery Tool - I've been using Endurox R4 for over 10 years now. I chose it after reading Performance Nutrition, which stresses getting some protein into your pre, during, and post exercise regimes. I like to spend a lot of time on the move, whether swimming, biking, hiking, and/or running; at many different effort levels and distances. Whenever I go long, this is what's waiting for me when I return. It really helps my recovery process so I can get back out there more quickly, feeling refreshed and ready to hit it again. I heartily endorse R4!
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Reviewed by:  from Glen Ellyn, IL. on 10/19/2021
5 Stars
Couldn't do it without Endurox R4!
I've been using Endurox for over a year now and swear by it. It's really helped me recover and feel ready to go for the hard sessions. I'm finishing out a marathon cycle that peaked at 88 miles and usually run a medium-long run and long run each week (to go along with 1-2 hard sessions). I couldn't do it without Endurox.
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Reviewed by: (Verified Buyer)  from KCMO. on 10/18/2021
5 Stars
This product is the TRUTH!
This product is the TRUTH! Many moons ago I used a product called "carboFire" and it really helped out after a hard workout; But Weider stopped making it. I was on the hunt for a suitable replacement and a great dude at a GNC store turn me on to this product. It worked better than Carbofire and I have used it ever since. I'm moving over 500 pounds in one day and drinking this after, REALLY helped my body the next day. Without it I would be in a world of hurt with shredded, burning muscles that takes 4 days to heal; With Endurox R4 I'm good to go the very next day! Each week I was getting better and better with muscle recovery! THIS is the product to help you reach your fitness goals; I STRONGLY recommend this and the entire product line :)
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Reviewed by:  from Chi-Town. on 10/15/2021

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