Swiss supplement innovator KA-EX today announced that its products, Cortisol Stress Reducer powder sachets and Creatine EAA+ Booster powder sachets, will launch nationwide with GNC (General Nutrition Centers) beginning this month, both in-stores and online.
GNC, America’s largest specialty supplement retailer with over 2,000 stores nationwide, is the destination of choice for performance-focused consumers seeking health and nutrition products. Nationwide presence at GNC establishes KA-EX’s entry to the US market with coast-to-coast retail presence in one of the most credible channels in the category. KA-EX has also been selected to join GNC at Olympia Weekend in Las Vegas from September 24–27, 2026.
About The Products:
- KA-EX Creatine EAA+ Booster offers more than just empty energy – it’s a 3-in-1 Performance drink supporting energy (105mg caffeine), hydration (>1000mg electrolytes), and performance (essential amino acids, betaine, L-citrulline, and 3g of Creapure Creatine). In 2026, it received the World Food Innovation Award—often described as the global “Oscars” of the food and beverage industry.
- KA-EX Cortisol Stress Reducer is a post-workout beverage formulated to reduce elevated cortisol levels following strenuous training and high-performance events, with key ingredients like phosphatidylserine, electrolytes, and amino acids. Backed by three clinical trials, it is the world’s only cortisol stress reducer shown to significantly lower cortisol levels within 48 hours.
Research and Validation
KA-EX’s Cortisol Stress Reducer, the brand’s flagship post-workout beverage, is formulated to reduce elevated cortisol levels following strenuous training and high-performance events. Backed by five years of pharmaceutical research and independent clinical trials, Cortisol Stress Reducer has been shown to lower cortisol by 36%, increase REM sleep by 15%, and improve HRV by 10%, supporting faster recovery, better sleep, and enhanced daily performance. KA-EX supplies thousands of professional athletes and some of the world’s leading sports teams, including Tudor Pro Cycling, Brooklyn Pro Pickleball Team, Brooklyn FC and numerous other teams and Olympic gold medalists.
“Entering GNC both online and in retail stores gives consumers greater access to KA-EX at the places they already shop for performance health and nutrition products,” said Pedro Schmidt, CEO and Founder of KA-EX and ETH Zurich-trained pharmaceutical scientist. “As we continue to cement our US presence, accessibility and visibility are key.”
Availability
KA-EX launches nationwide in GNC in August 2026, starting with the sachet version of Cortisol Stress Reducer and Creatine EAA+ Booster.
For more info, visit www.ka-ex.com
KA-EX® is a premium Swiss performance and wellness supplement brand founded by ETH Zurich-trained pharmaceutical scientist Pedro Schmidt, launched in Switzerland in 2017 and now the country’s best-selling supplement. After entering the U.S. with its top-performing Cortisol Stress Reducer, the brand is expanding its portfolio with the Creatine EAA+ Booster in April 2026. Trusted by thousands of professional athletes, teams, and high-performing individuals worldwide, KA-EX unites pharmaceutical-grade formulation, ingredient transparency, and clinical validation. KA-EX’s ready-to-drink lineup is turning heads at Earth Bar, Rumble, Gopuff, and The Feed, alongside its own direct-to-consumer website – and the momentum keeps building. With its ready-to-mix powders now live in GNC stores, KA-EX is gearing up to bring the RTDs into GNC next, putting its full product lineup within reach of fans nationwide.
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