Most potent opioid is ?
a) Butorphanol
b) Pentazocine
c) Sulfentanyl
d) Hdrocodone
Correct Answer - C
Ans. C. Sulfentanyl
[Ref KDT p. 476]
The order of potency of opioids:
Sufentanil > Fentanyl > Buprenorphine > Hydromorphone,
Oxymorphone > Butorphanol > Levorphenol > Oxycodone >
Hydrocodone > Nalbuphine, morphine, Methadone > Pentazocine >
codeine > Mepridine (Pethidine) > Propoxyphane.