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This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.

Vitamin D prophylaxis in infants (D, CH, A)

Recommended vitamin D amount for infants in Germany and Switzerland, preterm infants under 1500 g, conversion IU ↔ µg (1 µg = 40 IU)

Details
For example the amount per drop or tablet according to the package.

Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.

Frequently asked questions

Vitamin D prophylaxis in infants (D, CH, A): What does this calculator compute?

Shows the recommended amount of vitamin D for the prevention of rickets (softening of the bones) in infants: Germany 400–500 IU per day until the second early summer of life (Netzwerk Gesund ins Leben 2016), preterm infants under 1500 g 800–1000 IU in the first months of life; Switzerland: recommended daily intake (vitamin D from all sources) 400 IU in year of life 1, 600 IU from year of life 2; the Federal Office of Public Health recommends vitamin D year-round until the age of 3 years. No source with a dose was found for Austria. In addition, conversion of International Units (IU) into micrograms (1 µg = 40 IU) and a note on the risk of overdose.

Vitamin D prophylaxis in infants (D, CH, A): Which sources is this calculator based on?

Netzwerk Gesund ins Leben (IN FORM), aid infodienst: Recommendations for action on nutrition and physical activity of infants and breastfeeding women (lecture slides, as of 09/2016) (2016); Dicheva-Radev S, Paulides M, Rascher W; Drug Commission of the German Medical Association (AkdÄ): Vitamin D – quickly overdosed in infants (Arzneiverordnung in der Praxis 52:16–22) (2025); Swissmilk; Swiss Federal Nutrition Commission (EEK): Vitamin D: special recommendations for infants and young children (leaflet, based on: Recommendations of the Swiss Federal Nutrition Commission on vitamin D intake, Schweiz Med Forum 2012;12:775–778) (2019); Federal Institute for Risk Assessment (BfR): Vitamin D poisoning in infants: overdose of vitamin D can be potentially life-threatening (Communication no. 045/2026 of 2026-08-07) (2026)