Swisse Ultiboost Calcium + Vitamin D Effervescent is a premium quality, great tasting formula to help support healthy bones and teeth and promote calcium absorption. Healthy Bones & Teeth: Calcium and vitamin D are included to help maintain strong, healthy bones and teeth. Increased Absorption: Formulated with naturally derived vitamin D3 to help promote the absorption and delivery of calcium to the bone. Source of Calcium: A diet deficient in calcium may contribute to osteoporosis in later life. Calcium requirements may increase dependent on age, gender, diet, pregnancy, lactation and post menopause.The human skeleton consists of 206 bones that provide a framework for the body to help maintain shape, protect vital organs and provide a place for muscles to attach. Swisse Ultiboost Calcium + Vitamin D Effervescent has been formulated based on scientific evidence to provide calcium and vitamin D in a convenient, one-a-day dose.