Safety
Dosage

IU

International Unit

High risk

Risk

Can be mistaken for "IV" (intravenous) or "10" (ten)

Safer Alternative

Write "international unit" or "units"

Example

10 IU misread as 10 IV or 100 units

Sources

https://online.ecri.org/hubfs/ISMP/Resources/ISMP_ErrorProneAbbreviation_List.pdf
https://www.jointcommission.org/en-us/knowledge-library/support-center/standards-interpretation/standards-faqs/000001457