Product Description
One of the most simple, performance-boosting supplements on the market.
As a Feed Favorite, this product is phenomenal at increasing oxygen uptake and buffering lactic acid. What will you feel? 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.
Why do we love Sur AltRed?
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 certified by Informed Sport. 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!
Does AltRed work?
Sur has conducted three gold-standard clinical studies that prove positive effects for endurance athletes taking AltRed. Gold standard studies are double-blind, crossover, placebo-controlled, and randomized. Additional studies are in the works and will be added as they are published.
Highlights from studies:
- 3.5% more watts
- 3% faster times
- 15% reduction in perceived exertion
- 2.5% more distance
- 5.4% increased exercise efficiency
- 9% reduction in exercise-induced muscle damage
- 14% less lactate acid production
Betalain-Rich Concentrate Supplementation Improves Exercise Performance in Competitive Runners
Researchers at the University of California, Davis conducted a study on distance runners and showed that the runners performed an average of 3% faster in a 5K time trial when they used AltRed. The runners also saw an average 14% reduction in lactate acid levels and a 15% reduction in perceived exertion. Read full study
Betalain-Rich Concentrate Supplementation Improves Exercise Performance and Recovery in Competitive Triathletes
Another study at the University of California, Davis conducted on triathletes showed that they performed an average of 3% faster in a 5K recovery time trial performed 24 hours after completing a 10K time trial when they used AltRed. The triathletes also experienced an average 9% reduction in a key muscle damage indicator known as creatine kinase. Read full study
Effect of 1-Week Betalain-Rich Beetroot Concentrate Supplementation on Cycling Performance and Select Physiological Parameters
Researchers at Auburn University conducted a study on cyclists that showed they produced an average watt increase of 3.5% during a 30-minute functional threshold power test when they used AltRed. Cyclists also increased cycling efficiency by an average of 5.4%. Read full study
How to use Sur AltRed:
Take one capsule 1 hour before starting your workout or competition. Take another capsule every 3 hours for longer activities.
We want you to love the nutrition you purchase from The Feed. We also know that sports nutrition is personal - a flavor, texture, supplement, or fueling product that works perfectly for one athlete may simply not be the right fit for another.
That’s why we offer our Always Happy Promise.
If you try a nutrition or consumable product and you’re not satisfied with it, let us know within 30 days of delivery and our Athlete Experience team will work to make it right.
Sur AltRed - FAQ
Sur AltRed, Answered.
A betalains concentrate derived from beets. Betalains are the red pigment compounds in beets that improve oxygen delivery to muscles, buffer lactic acid, and reduce exercise-induced muscle damage. One capsule before training or racing — no sugar, no nitrates, no loading protocol required.
Most beet supplements work through nitrates. AltRed removes the nitrates and sugars entirely and isolates betalains — the red pigment compound in beets — using a proprietary extraction method. You cannot replicate this with whole beets, beet juice, or beet powders. The extraction process also increases bioavailability significantly.
Three gold-standard, double-blind, placebo-controlled studies at UC Davis and Auburn University confirm it works. Across runners, triathletes, and cyclists: 3% faster times, 3.5% more watts, 14% less lactate production, 15% less perceived exertion, and a 9% reduction in exercise-induced muscle damage. The results are consistent across disciplines and effort types.
Yes. Informed Sport certified — every batch tested for banned substances. Safe for competitive athletes subject to drug testing.
One capsule 1 hour before training or competition. For efforts longer than 3 hours, take an additional capsule every 3 hours.