Klean Athlete
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Published
2026/07/23
About
Klean Athlete is a line of NSF Certified for Sport® nutritional supplements, certified free from banned substances and contaminants. Designed for athletes at every level, Klean Athlete supports peak performance, daily recovery, and long-term well-being with clean, science-backed formulations manufactured in the USA by Douglas Laboratories. Trusted by professional athletes and health-conscious individuals, every Klean Athlete product is third-party certified through the NSF Certified for Sport program, verifying content, purity, and freedom from more than 270 banned substances recognized by the USOC, NFL, MLB, PGA, LPGA, and the Canadian Centre for Ethics in Sport.