• Supports cortisol balance & stress recovery
  KA-EX is designed to help support healthy cortisol balance after intense training, helping athletes recover faster while supporting sleep quality, energy levels, muscle recovery, and endurance.
• Trusted by elite athletes worldwide
  KA-EX is used by thousands of professional athletes and multiple professional sports teams, including world champions and Olympians across various sports. The formula is certified for clean sport and tested by Informed Sport.
• Swiss science – clinically validated
  Developed through 5 years of scientific research in Switzerland, KA-EX is supported by multiple clinical studies designed to evaluate its effectiveness in supporting recovery and performance.
• Premium ingredients
  Formulated with a high-quality blend of GMP-certified amino acids, electrolytes, vitamins, alkaline salts, and bioactive compounds.

1. What is the KA-EX® Cortisol Stress Reducer and how does it work? 

Cortisol is the body’s primary stress hormone. It rises in response to physical or emotional stress to help you adapt—but when cortisol stays elevated for too long, it can impair recovery, disrupt sleep, and diminish overall performance.  

After intense training, the body enters a prolonged stress state: inflammation, increased acidity, and micro-tears in muscle tissue trigger an extended cortisol response that can last 48 to 72 hours. This often results in low energy, stagnated progress, and—in more severe cases—declining muscular performance.

KA‑EX® is designed to support cortisol normalisation through multiple pathways:  

• It contains phosphatidylserine, a clinically studied ingredient associated with supporting the regulation of exercise-induced cortisol responses; 
• It supports muscle repair and immune function with L-glutamine, and improves sleep quality with L-tryptophan, both of which help mitigate the effects of elevated cortisol.  
• By restoring optimal pH balance and replenishing muscle glycogen through a precise mix of glucose and fructose, KA-EX reduces metabolic stress and accelerates recovery.

Together, these mechanisms help your body return to balance faster, reducing the negative impact of cortisol and unlocking better recovery, sleep, and training results.  

In three clinical studies, KA-EX was shown to accelerate cortisol normalization by 36%, improve REM sleep by 16%, and enhance heart rate variability (HRV) by 10%—resulting in more energy (9%) and an 8% mood improvement. 

2. When and how should I take KA-EX® Cortisol Stress Reducer? 

KA‑EX® is designed to be taken immediately after physical exercise or activity to support recovery. The cortisol spike from exercise peaks within 30-90 minutes post-training, making the post-workout window critical. Since recovery processes last over 48 hours, many athletes also take it on rest days. 

KA‑EX® can also be taken on demanding workdays, during periods of mental fatigue, or whenever your body is under stress — whether physical or psychological. 

The recommended serving is one KA‑EX® per day, available in either sachet or bottle format. Mix one sachet with 500 ml (approx. 17 oz) of cold water, shake well until fully dissolved, and drink chilled. 

4. Can diabetics take KA-EX® Cortisol Stress Reducer? 

KA‑EX® contains 6 g of glucose and 12 g of fructose per serving — similar to the sugar content of an average apple. Diabetics should account for this in their insulin or dietary management and consult with a healthcare professional if unsure. 

5. Can pregnant or breastfeeding women take KA-EX® Cortisol Stress Reducer? 

There are no known concerns, but KA‑EX® contains several vitamins - such folate, B12, C) that might already be supplemented elsewhere. It’s important not to exceed the recommended daily intake. Please consult a doctor before using during pregnancy or breastfeeding. 

7. Does KA-EX® Cortisol Stress Reducer contain caffeine or stimulants? 
No. KA‑EX® is 100% free from stimulants like caffeine or taurine. Instead, it contains natural ingredients that support recovery, sleep, and overall well-being without disrupting sleep cycles. 

8. Sugar is known to lead to a cortisol spike, why does KA-EX® Cortisol Stress Reducer contain sugar? 
It’s true that sugar can cause a short-term cortisol spike lasting 30 to 60 minutes. However, in the context of post-exercise recovery, this effect is largely irrelevant.  

Intense physical activity elevates cortisol levels for 48 to 72 hours due to muscle damage, inflammation, and systemic stress. In comparison, the brief spike caused by sugar is minimal and does not contribute to any meaningful additional cortisol load.  

KA‑EX® contains only 18g of sugar—the same amount and type found in a regular apple (12g fructose, 6g glucose). Yet this amount plays a critical role in the product’s effectiveness by enabling key recovery processes:  

• Replenishment of muscle glycogen: Glycogen is the body’s primary energy substrate during exercise. Fructose preferentially restores hepatic glycogen, the liver's energy reserve that regulates blood glucose, while glucose replenishes muscle glycogen via insulin-stimulated uptake. Restoring glycogen immediately post-exercise is essential for proper muscle repair and performance rebound, as glycogen synthesis 
  
  
• Carbohydrate-facilitated nutrient absorption: As glucose and fructose are absorbed across the intestinal wall, they facilitate the simultaneous uptake of electrolytes and amino acids into cells — supporting hydration, acid-basebalance, and repair processes at the same time. 

As research confirms, replenishing glycogen immediately after exercise is not just about restoring energy — it is the trigger that initiates muscle repair, limits protein breakdown, and sets the conditions for adaptation.  

10. How is KA-EX® Cortisol Stress Reducer different from a regular sports drink or electrolyte mix? 
Most sports drinks and electrolyte mixes are designed with a single goal in mind: rehydration. They typically contain water, sodium, potassium, and simple carbohydrates to replace what is lost through sweat during exercise. While these are important, they address only one dimension of what your body needs after intense physical activity. 

KA‑EX® is clinically developed and patented in Switzerland as a full-spectrum recovery formula, targeting multiple recovery pathways simultaneously: 

• Hormonal support: Phosphatidylserine is a phospholipid naturally present in cell membranes, concentrated particularly in the brain. Research associates it with supporting the HPA axis response to exercise-induced physical stress. 
  
  
• Muscle repair and immune support: L-Glutamine contributes to normal protein synthesis and plays a central role in muscle repair and immune function, which are compromised following high-intensity exercise. 
  
  
• Sleep and mood support: L-tryptophan is the dietary precursor to both serotonin and melatonin. Adequate melatonin levels are associated with normal sleep quality, which is essential for tissue repair and growth hormone release overnight. 
  
  
• Cellular antioxidant support: L-Cysteine is the precursor to glutathione, the body's primary intracellular antioxidant, which is depleted during intense exercise. Vitamin E and selenium further support the body's antioxidant enzyme systems.
   
• Energy and electrolyte restoration: A glucose and fructose combination initiates carbohydrate replenishment, alongside a full electrolyte profile which contributes to normal muscle function, normal nerve function, and electrolyte balance. 
  
  
• Micronutrient support: vitamins B6 and B12 contribute to normal energy metabolism, while zinc and selenium contribute to normal immune defense and normal antioxidant enzyme activity. 

11. Are the powder sachets and push-cap bottle the same formula? 
Yes — both formats contain the same functional ingredients in the same dosage. The only difference is in the separation of certain components for stability in the bottle.