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

• A. Immediate need basis ONLY; No longer than 72 hours
• B. 7 days
• C. 30 days
• D. 6 months

Answer: (A)

In an immediate-need situation, a physician may provide a short emergency prescription for a controlled substance, but the amount is strictly limited to up to 72 hours (three days). This cap lets the patient receive urgent relief while ensuring the condition is reassessed promptly, and it helps prevent ongoing, unvetted use or diversion. After that 72-hour window, a full evaluation should occur and a standard prescription or other treatment plan should be established with appropriate documentation. The longer durations listed—7 days, 30 days, or 6 months—exceed what is permitted for emergency/immediate-need prescribing.