Pharmacology 7th Edition by Henry Hitner,Barbara Nagle

Exercise 19

It is not uncommon for drug abusers to alter prescriptions for opioids. Common alterations to watch forinclude changing the quantities (i.e., 10 to 40, 30 to 80, or adding a 1 in front of the number-20 to 120) and adding refills where none were indicated. Prescribers can help deter this practice by spelling out the quantities and refills or by writing no refill or non rep if no refills are desired. Look at the following pre-scriptions and see if you notice anything that seems out of place. Then explain what, if anything, is out of place and what you think the pharmacy might do.a. dental- Vicodin #42-1 po q6h prn dental pain-refill 4 times.
b. bone break- Tylenol /codeine 30mg #30-1-2 po q3-4h prn leg pain-refill 4 times.
c. cancer patient-morphine Intensol 20mg/ml #120ml-0.25 to 1 ml po q1-2h prn breakthru pain-no refill
d. emergency room- Demerol 50mg tablets #110-1 po q4-6h prn migraine pain-0 refills