Safety
Medication

PTU

Propylthiouracil

High risk

Risk

ISMP lists PTU as error-prone: propylthiouracil may be mistaken as Purinethol (mercaptopurine).

Safer Alternative

Write "propylthiouracil"

Example

PTU confused with Purinethol

Sources

https://online.ecri.org/hubfs/ISMP/Resources/ISMP_ErrorProneAbbreviation_List.pdf