Sur AltRed By Sur

106 Reviews
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Price: $49.99
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What we think

This is our favorite and one of the most simple performance-boosting supplements on the market.  It is phenomenal at increasing oxygen uptake and buffering lactic acid. What you feel is that during hard efforts your legs will simply hurt less, enabling you to push harder than you normally could in training and racing.

Beets have been known to help boost endurance performance for a while, but Sur AltRed is the first beet supplement on the market that contains only betalains extract, the nutrient that produces the red pigment in beets. AltRed uses a proprietary extraction method to remove nitrates and sugars, creating a betalains concentrate with increased bioavailability. You cannot get this from whole beets, beet juice or beet powders.

So what exactly do these betalains do? The AltRed Betalains in these tiny capsules improve oxygen delivery to your muscles and allow you to go further, faster, and longer in training and competition. AltRed's clinically proven athletic performance and recovery benefits are backed by science, 8+ years of field testing, and world champion endurance athletes. These studies have shown that Sur AltRed can help athletes:

  • Increase power output
  • Cover more distance for the same effort
  • Increase cycling and running efficiency
  • Reduce markers of muscle damage
  • Recover better

AltRed is also safe for sport. It is tested by both NSF Certified for Sport® and Informed Choice Trusted by Sport. Can you say win-win? We've been testing this in-house for some time now and the results are outstanding. This is now a staple in our supplement closet and the results are in. It works...and works well!

How to take AltRed

Take one capsule 1-2 hours before starting your workout or competition. Take another capsule every 2 hours for longer activities.


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Reviews for Sur AltRed

Customer Reviews
4.7 Based on 107 Reviews
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United States United States
Effective supplement supported by science

Beets are supported by science to enhance athletic performance and are the main ingredients in this supplement. Works for me, noticeable difference in strength during prolonged endurance efforts.

Tracy M.
United States United States
High Altitude in a small red capsule

I found AltRed really does fight muscle fatigue while doing big hills cycling, I feel stronger and I'm able to push harder with perceivable less burning, my breathing is controlled better at high intensity.

Tracy Mcintosh verified customer review of Sur AltRed
United States United States
Sur alt red

Was skeptical at first. Tried it an hour before a half marathon. The fatigue did not gather in my legs as it normally does. Love it. I was able to achieve a pr!

United States United States
Sur AltRed

I haven’t tried it long enough yet to make a review but so far i think its pretty good.. I feel a bit of zip…..

United States United States
Yep, it works!

I did a 15 mile sprint on my training bike and was extra hard on the legs and had absolutely no muscle fatigue or weakness, and no signs of lactic accumulation, which is definitely an improvement. Im planning to use it for an upcoming 103 miler and feel confident I can go harder than ever and not worry about lactic buildup ruining my day.

United States United States

Have used AltRed for long training rides and for Century and double Century events with great results! Super impressed with performance, endurance, and the edge this brings to the table. It WORKS!

United States United States
My legs feel great!

I am training for my first cyclocross season and my legs have never felt better. This stuff is great!

United States United States
Alt red

Still using, been consistent with it for about 3 wks. Seems to help so far. Estafter longer rides with hard efforts. The next day I feel not as tight and sore.