For how long can a doctor prescribe controlled substances based on an immediate need?

The correct choice indicates that a doctor can prescribe controlled substances for up to 72 hours based on an immediate need. This regulation is in place to address situations where a patient requires immediate relief from severe pain or a similar urgent health issue but may not have had the opportunity to complete a thorough medical evaluation or consultation.

In emergency scenarios, the immediate need dictates that a physician can provide a short-term prescription to mitigate the patient's discomfort while ensuring that a proper follow-up visit is scheduled for continued treatment or evaluation. This 72-hour window allows for timely intervention without compromising the safety and oversight usually associated with prescribing controlled substances.

It is crucial to understand that this is a temporary measure and is not intended to substitute for a complete examination or an ongoing treatment plan, which would require a more extensive prescribing period or follow-up care.