The following opioid analgesic is similar to codeine in
pharmacological profile but is less constipating:
A. Methadone
B. Buprenorphine
C. Butorphanol
D. Dextropropoxyphene
pharmacological profile but is less constipating:
A. Methadone
B. Buprenorphine
C. Butorphanol
D. Dextropropoxyphene