Final answer:
A prescriber generally cannot call in a prescription for Dexedrine 5mg because it is a Schedule II controlled substance. However, exceptions for emergencies do exist where a verbal prescription can be given with subsequent written follow-up. (Option B)
Step-by-step explanation:
Whether a prescriber can verbally call in a prescription for Dexedrine 5mg depends on the regulations in place which can vary by jurisdiction. Dexedrine (dextroamphetamine) is classified as a Schedule II controlled substance by the U.S. Drug Enforcement Administration (DEA) due to its high potential for abuse and dependence. Generally, Schedule II medications require a written prescription and cannot be called in. However, there are exceptions in certain situations such as emergencies, where the prescriber can call in a prescription to the pharmacy with the understanding that a written prescription will be provided within a certain time frame as specified by law. It's essential that both the prescriber and the pharmacy comply with the DEA's regulations and applicable state laws regarding controlled substances to avoid legal issues.