Abbreviation	Intended meaning	Misinterpretation
Medications
AZT	zidovudine	azathioprine
DPT	diphtheria-pertussis-tetanus	Demerol-Phenergan-Thorazine
HCT	hydrocortisone	hydrochlorothiazide
MgS04	magnesium sulfate	morphine sulfate
5-ASA	5-aminosalicylic acid	five tablets of aspirin
Dosing
o.d. or od	once daily	right eye
t.i.w. or tiw	three times a week	t.i.d. (three times a day)
SC	subcutaneous	sublingual
q.d. or qd	every day	q.i.d. (four times a day)
q.h.s. or qhs	at bedtime	every hour
IU	international unit	IV or intravenously
per os	orally	left eye
mcg	microgram	mg (milligram)