Athletes need to train, no matter what: rain or shine, early mornings, late evenings, sore muscles, or low energy. Vitamin D may help to improve the quality, frequency and duration of training, and contribute to faster muscle recovery. Klean-D 5,000 IU contains natural vitamin D₃, providing targeted support for athletes who train indoors or receive limited exposure to natural sunlight. Vitamin D supplementation may also help support athletes' immune health, musculoskeletal strength and physical performance.^‡

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*FDA Disclaimer: The information about this product and statements made are provided by the manufacturer, except customer reviews which are not evaluated. See www.douglaslabs.com for information about the relationship between this product and any claims made. Results may vary from person to person based on body size and other factors, and the effectiveness is not guaranteed for you. Always seek the advice of your healthcare professional about taking dietary, nutritional, herbal or homeopathic supplements.