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Klean-D™ contains 25 mcg (1,000 IU) of natural vitamin D3 per tablet. Vitamin D supplementation may help support immune health, musculoskeletal strength and physical performance in athletes. Check out Klean-D 125 mcg as well for your dosing needs.
KLEAN-D is tested and certified by the NSF Certified for Sport® Program, which was created to meet the growing demands of athletes, coaches, and healthcare professionals to certify that sports supplements are safe and completely free from banned substances. Every product that carries the NSF Certified For Sport® mark has undergone stringent laboratory testing to confirm content, purity, and compliance.
| Serving Size: 1 Tablet | Amount/Serving |
| Vitamin D3 (as cholecalciferol) | 25 mcg (1,000 IU) |
Other ingredients: Microcrystalline cellulose, calcium carbonate, stearic acid, vegetable stearate and silica.
As a dietary supplement, adults take 1 tablet daily with a meal or as directed.
Vitamin D is a fat-soluble vitamin and is assessed by measuring serum 25-hydroxyvitamin D [25(OH)D] concentrations. Widely known for its role in healthy bone metabolism, Vitamin D enhances intestinal calcium and phosphorus absorption to enable normal bone mineralization. Studies have shown that adequate vitamin D levels are important for enhancing bone strength and density. Among its other health functions, vitamin D plays a critical role in the musculoskeletal system, as vitamin D sufficiency is correlated with optimal muscle function. Several clinical studies have shown that supplementation with vitamin D improves muscle strength and may enhance physical performance, suggesting a beneficial use for athletes. Additionally, studies have shown a positive correlation between maximal oxygen uptake (VO2 max) and serum 25(OH)D concentrations, which may enhance physical activity. Vitamin D may also decrease post-exercise recovery time by increasing cellular matrix proteins, which are critical for skeletal muscle repair. Besides musculoskeletal support, vitamin D has many other roles in the body, including modulation of cell growth and cell signaling, metabolic health, cognitive/mood support, and immune health
