Two vital nutrients, calcium and Vitamin D, work together to help build strong bones. Most people know that calcium is essential for bone strength but may not realise that without Vitamin D to help absorption, calcium simply cannot perform effectively.Even if you take a calcium supplement, if your vitamin D levels are too low then your bones may still miss out. This can lead to osteoporosis or debilitating falls and fractures.The main source of Vitamin D is sunlight. It stimulates our skin to produce the Vitamin D we need for optimum body function. As we age, our body's ability to produce Vitamin D is reduced. Even in sunny Australia, a surprising number of people suffer Vitamin D deficiency.That's where Ostelin comes in.A combined caplet of calcium (600mg) and Vitamin D (500IU) that assists in the prevention and treatment of Osteoporosis. Ostelin Vitamin D & Calcium contains the highest dose of Vitamin D per caplet available in a non-prescription combination product in Australia. 'Ostelin's new combination product contains two essential ingredients for healthy bones - Vitamin D and calcium,' says Assoc Professor Mason, an expert in Vitamin D research from the University of Sydney. 'This makes it ideal for people with low Vitamin D levels who also do not receive their recommended daily intake of calcium. Further, calcium and Vitamin D together have been shown to reduce falls and fractures in susceptible populations.'