Founded in 1942, Ostelin is Australia's first company to research and produce Vitamin D. Vitamin D is essential for promoting calcium absorption in the intestines and helps maintain normal levels of calcium and phosphorus in the blood, thus maintaining healthy and strong bones. In addition, Vitamin D also regulates cell growth, neuromuscular function, and enhances immunity, making it a highly versatile and important vitamin. Besides sun exposure, where sunlight synthesizes Vitamin D in the skin, taking high-quality supplements is also a good way to absorb Vitamin D. Ostelin, an Australian health food brand, focuses on developing Vitamin D and calcium supplements, offering a diverse range of products specially formulated for different age groups: such as liquid Vitamin D3 for children and calcium tablets for adults. The products contain no artificial colors, flavors, or sweeteners, making them safe for both adults and children.