Dont use MSO4 or MgSO4 because
Can be confused with magnesium sulfate or morphine sulfate
Dont use HS/hs because
Easily confused with half strength or hour of sleep
Dont use QD,Q.D., QOD, Q.O.D because
Can be confused with every day and every other day
Dont Use U/IU/u because
It will be confused will IV or volume use Units
Dont use μg because
Easily confused mg use mcg