The use of Naltrexone in opioid dependence is in which phase of treatment?
**Core Concept**
The use of Naltrexone in opioid dependence is a pharmacological intervention aimed at reducing relapse rates by blocking opioid receptors, thereby preventing the euphoric effects of opioids. Naltrexone is a long-acting opioid receptor antagonist that works by competitively inhibiting the action of opioids at the mu-receptor.
**Why the Correct Answer is Right**
Naltrexone is typically used in the **maintenance phase** of treatment for opioid dependence. This phase occurs after the acute withdrawal phase and is characterized by the stabilization of the patient and the prevention of relapse. Naltrexone helps to maintain abstinence by blocking the rewarding effects of opioids, thus reducing the desire to use opioids. By doing so, it allows patients to focus on other aspects of their recovery, such as counseling and behavioral therapy.
**Why Each Wrong Option is Incorrect**
**Option A:** Naltrexone is not used in the **induction phase** of treatment, as it would exacerbate withdrawal symptoms in individuals who have not yet received opioid agonist therapy.
**Option B:** Naltrexone is not used in the **detoxification phase**, as it does not help alleviate withdrawal symptoms and may even worsen them.
**Option C:** Naltrexone is not used in the **relapse prevention phase**, although it is sometimes used in this context; the correct term is maintenance phase.
**Clinical Pearl / High-Yield Fact**
Naltrexone is often used in conjunction with counseling and behavioral therapy to help patients maintain long-term abstinence from opioids.
**Correct Answer:** C.