Frequency
QD
Once daily
Risk
Can be mistaken for "QID" (four times daily) or "QOD" (every other day)
Safer Alternative
Write "daily"
Example
QD misread as QID resulting in 4x overdose
Once daily
Can be mistaken for "QID" (four times daily) or "QOD" (every other day)
Write "daily"
QD misread as QID resulting in 4x overdose