What type of drug is Naltrexone?

Naltrexone is classified as an opiate antagonist, meaning it works by blocking the effects of opiates in the brain. This action is particularly beneficial in treating individuals with opioid use disorder, as it can help reduce cravings and diminish the euphoric effects associated with opioid consumption. By occupying the opioid receptors, naltrexone prevents other opioids from binding to these receptors, thereby decreasing the likelihood of relapse.

This mechanism is crucial in addiction treatment, as it allows individuals to maintain abstinence from opioids without experiencing the rewarding effects that can lead to continued substance use. Naltrexone is also used in the management of alcohol use disorder, helping to reduce the urge to drink and supporting recovery efforts.

In contrast, the other options—opiate agonist, stimulant, and depressant—do not accurately represent the properties or actions of naltrexone. Opiate agonists enhance the effects of opioids, while stimulants and depressants refer to classes of drugs that can increase or decrease central nervous system activity, respectively, which is unrelated to naltrexone's function as an antagonist.