In adults side effects are generally few.[4] It may occasionally cause skin irritation.[1] Urea works in part by loosening dried skin.[5] Preparations generally contain 5 to 50% urea.[2][3]
^Paradisis M, El Hachem M, Diociaiuti A, Giannetti A (2015). "Ichthyoses". In Katsambas A, Lotti T, Dessinioti C, D'Erme AM (eds.). European Handbook of Dermatological Treatments (3rd ed.). Springer. p. 439. ISBN9783662451397. Archived from the original on 2017-01-16.
^World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
^World Health Organization (2021). World Health Organization model list of essential medicines: 22nd list (2021). Geneva: World Health Organization. hdl:10665/345533. WHO/MHP/HPS/EML/2021.02.