Calciquick‑D3 Nano 60K contains a very high dose of vitamin D3 (60,000 IU). It may be prescribed for children above 3 years in certain situations, but only under a pediatrician’s supervision. The correct dose and duration depend on the child’s age, weight, vitamin D levels, and medical needs. Giving high‑dose vitamin D without medical advice can lead to excessive levels, so please consult a pediatrician before using this product in a child.