“I only want the norco, not the antibiotic”

Today a patient without insurance brought in two separate scripts, one for norco one for antibiotic. After finding out the antibiotic is over 50 dollars, he said he only wanted norco. I told him that we had to fill both, and he replied what if I never showed you the antibiotic? Then he left, likely to another pharmacy to show them just the norco. This got me thinking, how do you prevent patients from skipping out on antibiotics?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums