Which substance is commonly used to treat opioid addiction and acts on opioid receptors?

Which substance is commonly used to treat opioid addiction and acts on opioid receptors?

• A. Methadone
• B. Morphine
• C. Heroin
• D. Cocaine

Answer: (A)

Opioid addiction treatment relies on medications that blunt withdrawal and reduce cravings by acting on the same receptors as other opioids. Methadone fits this role because it is a long-acting synthetic opioid that binds to mu-opioid receptors. Its extended duration provides steady receptor occupancy, preventing withdrawal symptoms and easing cravings throughout the day. This makes withdrawal less distressing and helps people stay in treatment, reducing illicit opioid use and overdose risk when used in supervised maintenance programs. Morphine and heroin are also opioids that activate the same receptors, but they are not used as standard treatments for addiction due to their abuse potential and shorter duration, which can fuel ongoing misuse. Cocaine, on the other hand, does not act on opioid receptors at all; it affects other neurotransmitter systems, so it isn’t used to treat opioid dependence.

Opioid addiction treatment relies on medications that blunt withdrawal and reduce cravings by acting on the same receptors as other opioids. Methadone fits this role because it is a long-acting synthetic opioid that binds to mu-opioid receptors. Its extended duration provides steady receptor occupancy, preventing withdrawal symptoms and easing cravings throughout the day. This makes withdrawal less distressing and helps people stay in treatment, reducing illicit opioid use and overdose risk when used in supervised maintenance programs.

Morphine and heroin are also opioids that activate the same receptors, but they are not used as standard treatments for addiction due to their abuse potential and shorter duration, which can fuel ongoing misuse. Cocaine, on the other hand, does not act on opioid receptors at all; it affects other neurotransmitter systems, so it isn’t used to treat opioid dependence.