Which drug has a duration of 12-24 hours?

Which drug has a duration of 12-24 hours?

• A. Lidocaine
• B. Buprenorphine
• C. Carprofen
• D. Propofol

Answer: (C)

The key idea is matching the drug’s duration of action to the given time window. Carprofen is an NSAID used for pain relief in dogs, and its analgesic effects typically last about 12–24 hours after dosing. That makes it the best fit for a duration in this range. Lidocaine is a local anesthetic with a short action, usually 1–2 hours (even with vasoconstrictors it’s still just a few hours). Buprenorphine, an opioid, provides analgesia for roughly 6–8 hours in dogs (occasionally longer, but not typically 12–24). Propofol is an anesthetic induction agent with rapid onset and very short duration, measured in minutes, due to quick redistribution and metabolism.

The key idea is matching the drug’s duration of action to the given time window. Carprofen is an NSAID used for pain relief in dogs, and its analgesic effects typically last about 12–24 hours after dosing. That makes it the best fit for a duration in this range.

Lidocaine is a local anesthetic with a short action, usually 1–2 hours (even with vasoconstrictors it’s still just a few hours). Buprenorphine, an opioid, provides analgesia for roughly 6–8 hours in dogs (occasionally longer, but not typically 12–24). Propofol is an anesthetic induction agent with rapid onset and very short duration, measured in minutes, due to quick redistribution and metabolism.