Final answer:
Schedule V drugs in the United States can be refilled as authorized by the prescriber but cannot be filled or refilled more than six months after the original prescription date, and no more than five times.
Step-by-step explanation:
The question pertains to the regulations surrounding the refill limits of Schedule V drugs. In the United States, Schedule V drugs are considered to have a lower potential for abuse relative to the drugs or other substances in Schedule IV and consist of preparations containing limited quantities of certain narcotics. According to current Drug Enforcement Administration (DEA) regulations, prescriptions for Schedule V controlled substances may be refilled as authorized by the prescriber. However, no prescription for a controlled substance in Schedule V may be filled or refilled more than six months after the date on which such prescription was issued, and no such prescription authorized to be refilled may be refilled more than five times.