Product Description
You're training harder than ever, but recovery still feels like it's dragging you down. Here's what most athletes miss: it's not just about what you do during workouts—it's about what happens to your cortisol after. When stress hormones stay elevated, your body can't rebuild. Sleep suffers. Energy tanks. Progress stalls.
KA-EX is the world's first clinically-proven cortisol reducer that works in 48 hours.
What Makes It Different
Cortisol Control That Actually Works Clinical studies show a 36% faster return to normal cortisol levels within 48 hours. This isn't about masking fatigue—it's about fixing the root cause of incomplete recovery.
Swiss-Engineered Recovery Stack Phosphatidylserine tells your body to dial down stress hormones. L-tryptophan supports deep REM sleep. L-glutamine and targeted amino acids rebuild what training breaks down. This goes way beyond basic electrolytes.
Zero Stimulants, Maximum Results No caffeine. No taurine. Just clean, functional ingredients that work with your body's natural recovery systems. Vegan, gluten-free, and Informed Sport certified for pro athletes.
Olympic gold medalists and F1 drivers rely on this formula because when cortisol drops, everything else improves—muscle growth, testosterone, immune function, and endurance. If it’s good enough for the world’s best, it’s good enough for your PR goals.
How to Use It
Post-Workout: Mix 1 sachet in 10-17oz cold water immediately after training. For ready-to-drink bottles, push the cap to activate and consume right away.
Next-Day Dose: Take another serving 24 hours later, even on rest days. Cortisol doesn't take days off, so neither should your recovery strategy.
Pro Tip: Daily use delivers the best results—lower baseline cortisol means more energy in everyday life, not just after workouts.
Social Proof
KA-EX is the official supplier to PSG, Tudor Pro Cycling Team, Swiss National Soccer Team, and thousands of Olympic athletes and World Champions. Fabian Cancellara calls it "the perfect complement for top performance." When the world's best trust their recovery to one product, that tells you everything.
Gluten-free, dairy-free, vegan, vegetarian, tree-nut & peanut-free, soy-free, and stimulant-free. This isn't just another recovery drink. This is Swiss science solving the problem most athletes don't even know they have.
- Sport Tested: Informed Sport
Supplement Facts
3 Pack / Drink Mix
Serving Size: 1 Packet
Serving Per Container: 3
| Amount Per Serving | ||
|---|---|---|
| % Daily Value* | ||
| Calories 95 | ** | |
| Total Carbohydrate 19g | ** | |
| Dietary Fibers 1g | ** | |
| Total Sugars 18g | ** | |
| Includes 18g Added Sugars | ** | |
| Vitamin C (as ascorbic acid) 80mg | ** | |
| Vitamin E (as d-alpha tocopherol) 10mg | ** | |
| Thiamin (as thiamine hydrochloride) 0.9mg | ** | |
| Riboflavin 1.17mg | ** | |
| Niacin (as niacinamide) 13.3mg | ** | |
| Vitamin B6 (as pyridoxine hydrochloride) 1.17mg | ** | |
| Folate 285mcg DFE (165 mcg folic acid) | ** | |
| Vitamin B12 (as cyanocobalamin) 2.5mcg | ** | |
| Pantothenic Acid (as calcium D-pantothenate) 5mg | ** | |
| Choline (as choline bitartrate) 100mg | ** | |
| Calcium (as calcium carbonate) 270mg | ** | |
| Phosphorus (as dipotassium phosphate) 140mg | ** | |
| Magnesium (as magnesium carbonate) 110mg | ** | |
| Zinc (as zinc gluconate) 4.3mg | ** | |
| Selenium (as sodium selenite) 17mg | ** | |
| Sodium (as sodium bicarbonate) 180mg | ** | |
| Potassium (as dipotassium phosphate) 580mg | ** | |
| Betaine (as betaine hydrochloride) 415mg | ** | |
| Phosphatidylserine 100mg | ** | |
| L-Glutamine 2500mg | ** | |
| L-Tyrosine 415mg | ** | |
| L-Cysteine (as L-cysteine hydrochloride) 250mg | ** | |
| L-Tryptophan 70mg | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
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.
KA-EX Cortisol Stress Reducer FAQ's
Everything you need to know before getting started.
KA-EX contains 100mg of phosphatidylserine—a compound clinically proven to signal your body to lower cortisol production. Combined with L-tryptophan for sleep support and amino acids for recovery, it addresses cortisol from multiple angles. Three independent studies confirm a 36% faster return to normal cortisol levels within 48 hours.
Absolutely—and you should. Cortisol elevation from training doesn't disappear immediately. Taking KA-EX on rest days or during high-stress work periods helps maintain lower cortisol levels, which means better energy, mood, and readiness for your next session.
Yes. KA-EX is Informed Sport certified, meaning every batch is tested for banned substances. It's used by Olympic athletes, professional soccer teams, and F1 drivers who undergo strict anti-doping testing.