Yes, the recommended daily intake of vitamin D depends on several factors, such as age, and must be adapted specifically to your child’s needs. According to EFSA (European Food Safety Authority), the right vitamin D supply is*: for newborns and infants — supplementation from the first days of life, regardless of how they are fed — 400 IU/day; children (1–10 years old) — 600–1000 IU/day; teenagers (11–18 years old) — 800–2000 IU/day. *https://efsa.onlinelibrary.wiley.com/doi/pdf/10.2903/j.efsa.2018.5365