Vitabiotics Wellkid Calcium Liquid 150ml. Provides rich source of calcium. Magnesium, Zinc & Vitamin D. Designed for children aged 4-12 years. Calcium and vitamin D contribute to normal bone health. Wellkid Calcium Liquid provides a rich source of calcium and co-factors including magnesium and Vitamin D, in a smooth, great tasting liquid that kids will love. With a delicious orange taste Wellkid Calcium Liquid is suitable for children ages 4-12 years, providing an easy way to help safeguard their vital intake of calcium.. It is scientifically proven that Calcium and Vitamin D are needed for normal growth and development of bone in children.