** Due to a manufacturer change, this will either come in a jug or a pouch.
The window of time immediately after you ride is absolutely critical for recovery, and Ultragen from 1st Endurance is built specifically for that moment. Whether you’re gearing up for your next ride, the next lap of an endurance event, or simply want to feel strong again tomorrow, Ultragen helps your body recover faster and more completely. Hard racing and intense training break down muscle, deplete glycogen stores, drain essential vitamins and minerals, and elevate cortisol levels. Ultragen was precisely formulated to counter all of these stressors.
1st Endurance relies on clinical research, not guesswork, using nutrient levels proven to maximize recovery and rebuild your body efficiently. We at Tree Fort Bikes fully stand behind those claims based on real experience. From 50 to 100 mile rides where you still feel good the next day, to taking small servings every lap during a 24-hour race, Ultragen consistently delivers on its promise.
According to 1st Endurance and the research they cite, there is a “critical thirty-minute glycogen window” (often called the “window of opportunity”) immediately following exercise. During this time, insulin sensitivity is at its highest and exhausted muscles are primed to absorb nutrients. Miss this window, and your chance for maximum recovery is reduced. It’s not just about timing, it’s about delivering the right nutrients in the most effective way.
Ultragen’s carefully selected components work synergistically to fully maximize recovery, delivering the right nutrients to the right place at the right time.
Tropical Punch is a Tree Fort Favorite Flavor!
From First Endurance:
Time-Response protein complex:
All proteins are not equal. Ultragen uses a unique blend of advanced protein sources, each with specific recovery benefits. Hydrolyzed protein is enzymatically pre-digested into small di- and tri-peptides for rapid absorption during the critical glycogen window. Fast-acting whey protein isolate delivers high levels of anti-catabolic branched chain amino acids, while milk protein isolate provides sustained absorption for longer-term muscle repair.
Carbohydrate Catalyst:
High glycemic carbohydrates are rapidly absorbed and easy to digest. Glucose, with a glycemic index over 100, is absorbed faster than any other sugar available. Ultragen contains 60g of glucose because research shows high glycemic carbohydrates taken after exercise act as a catalyst, increasing the uptake of glutamine, branched-chain amino acids, vitamins, and minerals into exhausted muscle.
Cortisol Modulation:
Excess cortisol can suppress the immune system, increase the risk of upper respiratory infections, lower testosterone levels, and push the body into a catabolic state where muscle is broken down and fat is stored. Ultragen includes a synergistic blend of vitamins, minerals, co-factors, glutamine, and BCAAs designed to help modulate cortisol levels caused by intense endurance training.
L-Glutamine:
Intense physical exercise depletes glutamine stores faster than the body can replenish them. When levels drop, the body can become catabolic and begin breaking down muscle. Ultragen provides 6 grams of L-Glutamine to support glycogen synthesis, protein repair, nitrogen retention, and overall muscle recovery.
Branched Chain Amino Acid (BCAAs):
Often called the building blocks of muscle, BCAAs are essential for muscle repair, growth, and immune support. In addition to repairing muscle tissue, BCAAs help form antibodies that fight bacteria and viruses. Since the body cannot produce BCAAs on its own, they must come from diet and supplementation.
Essential vitamins, minerals and electrolytes:
Endurance athletes require higher levels of specific vitamins, minerals, and electrolytes to restore energy, fight free radicals, and maintain a strong immune system. Ultragen supplies high-potency vitamins, minerals, and electrolytes to help your body recover faster and perform better on your next effort.
Customer Reviews

reviewed by:
A GuestBest recovery drink on the market.

reviewed by:
A GuestI am border line on this product. The first two times I used this, two consecutive days, after 45 mile road ride, then after a 9 mile run, it didn't seem to give me the recovery the following day that I was hoping for. Worked fine as a quick recovery drink, but legs and body was still pretty wiped out the next day. The following weekend, it seemed to work better for me, so jury is still out.
Really would like to get Enervit R2 recovery back somehow. That stuff was fantastic!
Not sure I'd buy Ultragen again, but if I do, will buy it from Treefort!