Common Prescription Abbreviations

q          every
qd        once daily
bid       twice daily (every 12 hours)
tid        3 times daily (every 8 hours)
qid       4 times daily (every 6 hours)
h          hour
q 2h     every 2 hours
hs         bedtime (hour of sleep)
soln      solution (drops)
ung      ointment
gtt        drop
mg       milligram
mcg     microgram
ml        milliliter

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