Naltrexone Accord (Naltrexone Hydrochloride)

Naltrexone Accord is an opioid antagonist indicated for managing substance dependence disorders.

• Alcohol dependence: helps reduce cravings and supports abstinence from alcohol.
• Opioid dependence: blocks opioid receptors to prevent relapse and reduce the rewarding effects of opioids.
• Substance use disorder: used as part of a comprehensive treatment program to maintain sobriety.

• Naltrexone Hydrochloride acts as a competitive antagonist at mu, kappa, and delta opioid receptors. By binding to these receptors without activating them, it blocks the effects of both endogenous opioids and exogenous opioid substances, thereby reducing reinforcement, craving, and the physiological response associated with opioid and alcohol use.

Naltrexone Accord may cause a range of adverse reactions.

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Headache: transient cranial pain.
• Dizziness: sensation of light‑headedness.
• Fatigue: general tiredness.
• Insomnia: difficulty falling or staying asleep.
• Vomiting: occasional emesis.

Serious or Rare Side Effects

• Hepatotoxicity: elevated liver enzymes or liver injury.
• Severe depression: mood changes requiring medical attention.
• Suicidal thoughts: emergence of suicidal ideation.
• Allergic reactions: rash, itching, or swelling.
• Liver failure: rare but life‑threatening hepatic dysfunction.

Before initiating therapy with Naltrexone Accord, consider the following precautions.

• Liver function assessment: evaluate hepatic enzymes prior to use.
• Depression monitoring: watch for worsening mood or suicidal thoughts.
• Acute opioid withdrawal: avoid initiating during active withdrawal to prevent precipitated symptoms.
• Renal impairment: adjust use in patients with severe kidney disease.
• Hypersensitivity: discontinue if allergic reaction occurs.
• Store at room temperature: keep in original packaging, protect from moisture and direct sunlight.

Naltrexone Accord can interact with several medications, requiring careful management.

Major Interactions (Avoid)

• Opioid agonists (e.g., morphine, oxycodone): may precipitate withdrawal.
• Methadone or buprenorphine: can reduce therapeutic effect and cause abrupt withdrawal.
• Disulfiram: combined hepatotoxic risk.

Moderate Interactions (Monitor Closely)

• CNS depressants (e.g., benzodiazepines): may enhance sedation.
• Antidepressants (e.g., SSRIs): monitor for mood changes.
• Rifampin: may increase naltrexone metabolism, reducing efficacy.