Final answer:
All of the statements provided about Naltrexone are true. It blocks pleasurable sensations associated with alcohol and opiates, aids therapy in opiate addiction, and is more effective than disulfiram for alcoholics who are still drinking.
Step-by-step explanation:
The statement that is true of Naltrexone is d. All of the above are true. Naltrexone is a medication used to block the pleasurable sensations associated with alcohol and opiates, thereby reducing the reward and reinforcing effects of alcohol and opioid consumptions. It acts as an antagonist at opioid receptors, which means it blocks the effects of opioids in the body, making it effective as part of therapy for opiate addiction. Naltrexone can be taken orally and lasts longer in the body, making it a convenient treatment option. Furthermore, it is particularly useful for the treatment of narcotic dependence, where it maintains individuals on chronic therapy without the addictive properties of the narcotic. It is also considered more effective than disulfiram (Antabuse) for alcoholics who continue drinking because it does not require the patient to remain abstinent to be effective.