Question

In reading the following prescription in a medical record-Xanax .5 mg b.i.d. or p.r.n would mean:
a. Xanax .5 mg with food as needed.
b. Xanax .5 mg three times per day or before bedtime.
c. Xanax .5 mg twice a day or before meals.
d. Xanax .5 mg twice a day or as needed.

Answer

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