Klean ATHLETE Klean-D | Vitamin D3 for Immune Health, Muscle Recovery, Bone Strength | NSF Certified

Quality Commitment: Our Complete Product Line

Our complete product line is GMO-free and formulated without wheat, gluten, artificial coloring, flavoring, or sweeteners. Integrity is paramount, and quality is absolute, upheld by the uncompromising standards we maintain at our state-of-the-art U.S. manufacturing facilities. Rigorous testing and third-party certifications ensure the safety, consistency, and quality of our products.

Trusted by Over 350 Pro Teams

Klean Athlete is trusted by more than 350 professional and collegiate sports teams, their athletes, coaches, and staff. We work directly with major and minor league teams, collegiate teams, and various professional sports organizations. Klean is the preferred supplement choice for many of the world's top coaches, trainers, health professionals, and their athletes, representing a diverse range of team and individual sports. These athletes include Professional Baseball, Hockey, Football, and Soccer Champions, as well as national team members and Elite World Champions.

Klean is who we are, what we stand for, and the common thread in all athletes who trust in us, whether they are professionals or not. When health, peak performance, and careers are at stake, athletes deserve sports supplements they can trust.

Green in Klean

Sustainability and responsibility are the inspiration for our products, the science behind them, and the ingredients within. It's about operating in a way that protects and preserves the natural beauty of the most important training facility we've got - planet earth.

Immune Function: Plays a key role in immune function, regulates hormones in the body, and contributes to healthy plasma vitamin D levels. Muscle Recovery: Helps muscles recover strength after intense exercise or muscle injury. Calcium Absorption: Ensures normal calcium absorption and provides bone strength.*

Klean is Clean

Klean Athlete products are GMO-free and formulated without wheat, gluten, or artificial coloring, flavoring, or sweeteners. Every product is third-party certified by NSF International's NSF Certified for Sport program, helping athletes, coaches, and trainers make informed decisions when choosing sports supplements.

Fuel Your Foundation. Perform At Your Peak.

We power health and peak performance in athletes who demand the most from themselves, their sport, and their nutrition.*

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