The Opiate-Antagonist Naltrexone Is a Treatment for Substance Abuse That

Multiple Choice

The 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.