Performix, World Leader In Health & Wellness Supplements Launches First Highly Caffeinated Ready To Drink Beverage, Performix SST Energy Seltzer The Non-alcoholic Seltzer for Optimal Performance will be Available Exclusively at GNC Stores Nationwide & Online at Performixdriven.com News provided by Share this article Share this article NEW YORK, May 5, 2021 /PRNewswire/ -- Performix, a leader in active nutrition and pioneer in developing best in class, high-performing supplements, announced the launch of Performix SST Energy Seltzer today. A line of non-alcoholic, zero calorie and zero sugar energy seltzers with real ingredients, Performix SST delivers 100 ways to fuel today's active lifestyle. Available nationwide on May 8, exclusively at GNC, and online at www.performixdriven.com, the Performix SST lineup includes naturally flavored Lemon-Lime, Blueberry Acai, and Mango.