Question

The drug opiate-antagonist naitrexone is a treatment for substance abuse that works by

A. substituting a chemically similar drug for the addictive drug

B. both counteracting the effect of the opiates and producing withdrawl symptoms

C. producing a cross-tolerance effect in a drug user

D producing only a temperary euphoric effect if opiates continue to be used

Answer 1

Naltrexone is a drug to reduce alchohol cravings and help them to reduce alchohol intake.It is a opoid receptor antagonist that primarily treats alchoholism and opoid dependance.Naltroxine effectively blocks the effect of opiates.It binds the receptors in the brain and instead of activating them blocks them.Naltroxene does not make a person   feel ill when alchohol is consumed but uncomfortable when being in a drunken state.It reverses the physical effects of alchohol so that the person will not experience any discomfort when they consume alchohol.Therefore it produces a cross tolerance effect in a drug user.