Bioisland Adult Milk Calcium Softgels Formulated with calcium hydroxyapatite derived from milk. Calcium is important for the development and maintenance of bones and teeth. Calcium is needed at all stages of life, and extra calcium can benefit the body during puberty, postmenopause, pregnancy and breastfeeding. Vitamin D plays an important role in enhancing calcium absorption and helps support the growth and maintenance of healthy bones.Added menadione, also known as vitamin K2. Vitamin K2 helps support and maintain bone mineral density.Vitamin K2 helps maintain normal bones.