Final answer:
Controlled drugs in part 1 of the schedule to part G are subject to strict regulations, and refills are not allowed without a new prescription due to their potential for abuse and addiction.
Step-by-step explanation:
When discussing controlled drugs listed in part 1 of the schedule to part G, the question refers to a specific classification of prescription medication under a legal framework that regulates the handling of these substances. Generally speaking, drugs listed under this category are subject to stringent controls due to their high potential for abuse and addiction. For medications that fall under this schedule, refills are not allowed without a new prescription from a healthcare provider. This is to ensure that their use is closely monitored and that there is a legitimate medical need for their continued administration.