Which form of substance abuse is naltrexone primarily used to treat?

Naltrexone is an opioid receptor antagonist that is primarily used to treat opioid dependence by blocking the effects of opioids, thus helping to manage cravings and reduce the risk of relapse. Additionally, naltrexone is also effective in treating alcohol dependence, as it can help reduce cravings for alcohol and decrease the euphoric effects associated with drinking.

The dual effectiveness of naltrexone makes it a valuable tool in substance use treatment, as it addresses both alcohol and opioid use disorders. This is why the option indicating that naltrexone is used for both alcohol and opioid dependence is the most accurate choice. Understanding the pharmacology and applications of naltrexone is essential for effective treatment planning and addressing the needs of individuals struggling with these types of substance use disorders.