Which substance is a Schedule III analgesic with partial opioid agonist activity used for opioid dependence treatment?

Which substance is a Schedule III analgesic with partial opioid agonist activity used for opioid dependence treatment?

• A. Buprenorphine (Buprenex)
• B. Phencyclidine (PCP)
• C. Anabolic Steroids
• D. Butalbital

Answer: (A)

Buprenorphine is a partial mu-opioid receptor agonist, meaning it activates the receptor but only to a limited extent. It binds very tightly (high affinity) and produces analgesia with a ceiling effect on euphoria and respiratory depression. This makes it safer than full opioid agonists and especially useful in opioid dependence treatment, where it eases withdrawal symptoms and cravings while lowering misuse risk. It’s classified as a Schedule III controlled substance, reflecting medical use with some abuse potential. In practice, it’s often given in sublingual forms (sometimes with naloxone) to deters misuse and help maintain withdrawal control. The other options do not act as partial opioid agonists or are not used for opioid dependence: phencyclidine is a dissociative drug with no role in opioid dependence treatment; anabolic steroids are not analgesics acting on opioid receptors; butalbital is a barbiturate analgesic without partial opioid agonist activity.

Buprenorphine is a partial mu-opioid receptor agonist, meaning it activates the receptor but only to a limited extent. It binds very tightly (high affinity) and produces analgesia with a ceiling effect on euphoria and respiratory depression. This makes it safer than full opioid agonists and especially useful in opioid dependence treatment, where it eases withdrawal symptoms and cravings while lowering misuse risk. It’s classified as a Schedule III controlled substance, reflecting medical use with some abuse potential. In practice, it’s often given in sublingual forms (sometimes with naloxone) to deters misuse and help maintain withdrawal control. The other options do not act as partial opioid agonists or are not used for opioid dependence: phencyclidine is a dissociative drug with no role in opioid dependence treatment; anabolic steroids are not analgesics acting on opioid receptors; butalbital is a barbiturate analgesic without partial opioid agonist activity.