Federal Requirements for PTCB Practice Test 2026 - Free PTCB Practice Questions and Study Guide

Refills for Schedule III and Schedule IV medications are limited to five within six months from the date the prescription was issued. This means you can fill the initial prescription and, if the prescriber authorized it, provide up to five additional refills within that six‑month window. The total number of dispensing events within six months can be up to six (the initial fill plus five refills). After six months or after five refills, a new prescription is needed. This is why the best answer is that the maximum number of refills is five.