The drug opiate-antagonist naltrexone is a treatment for ...

[Diane]

The drug opiate-antagonist naltrexone is a treatment for substance abuse that works by
 
  a. substituting a chemically similar drug for the addictive drug.
 b. both counteracting the effects of opiates and producing withdrawal symptoms.
  c. producing a cross-tolerance effect in a drug user.
 d. producing only a temporary euphoric effect if opiates continue to be used.

Question 2

Which of the following is an example of the agonist substitution type of treatment for substance abuse?
 
  a. The use of methadone to treat heroin addiction
 b. A nicotine patch or nicotine gum to treat addiction to cigarette smoking
  c. Both of these
 d. Neither of these

[jliusyl]

Answer to Question 1

b

Answer to Question 2

c