Support your active lifestyle with Vitamin D3 which helps to maintain muscle function and keep your bones healthy. Each softgel from Now Foods provides 10µg of vitamin D and also helps to support the immune system - especially handy in the winter months when your natural vitamin D intake may be low due to a reduced exposure to sunlight. Support your active lifestyle with Vitamin D3 which helps to maintain muscle function and keep your bones healthy. Each softgel from Now Foods provides 10µg of vitamin D and also helps to support the immune system - especially handy in the winter months when your natural vitamin D intake may be low due to less sunshine. 10µg of vitamin D per softgel. Helps maintain muscle function. Helps maintain healthy bones. Supports a healthy immune system. Consider using during periods of reduced exposure to sunlight. 90 softgels per pack Vitamin D3 by Now Foods contains 400 IU of Vitamin D3 which supports normal muscle function and normal immune function. Read more!