Product image of Naltrexone Hydrochloride Aop Orphan Pharmaceuticals (Naltrexone Hydrochloride) supplied by GNH India

Naltrexone Hydrochloride Aop Orphan Pharmaceuticals

Active Ingredient:
Naltrexone Hydrochloride
Origin:
EU

Naltrexone Hydrochloride Aop Orphan Pharmaceuticals (Naltrexone Hydrochloride)

Naltrexone Hydrochloride, the active ingredient in Naltrexone Hydrochloride Aop Orphan Pharmaceuticals, is an opioid antagonist presented as an oral tablet for oral use. It is employed to treat opioid dependence and alcohol dependence in adult patients.

GNH India supplies Naltrexone Hydrochloride Aop Orphan Pharmaceuticals as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, adhering to EU GMP standards and providing reliable cold‑chain‑free logistics for oral dosage forms. The company offers flexible order quantities and supports regulatory documentation for importation.

Manufacturer / TM Owner

Aop Orphan Pharmaceuticals Gmbh

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Indications & Clinical Uses

Naltrexone Hydrochloride is used in the management of substance‑use disorders, acting on opioid and alcohol pathways.

  • Opioid dependence: reduces cravings and helps prevent relapse in patients undergoing detoxification.
  • Alcohol dependence: supports abstinence and decreases the frequency of heavy drinking episodes.
  • Opioid use disorder: assists in long‑term recovery by blocking the reinforcing effects of opioids.
  • Prevention of opioid overdose: diminishes the risk of overdose by antagonizing opioid receptors during accidental exposure.

How It Works

  • Naltrexone Hydrochloride acts as a competitive antagonist at the μ‑, κ‑ and δ‑opioid receptors. By binding to these receptors without activating them, it blocks the effects of both endogenous opioids and exogenous opioid agonists. This antagonism prevents the euphoric and reinforcing signals that underlie dependence, thereby reducing cravings and the likelihood of relapse. The drug is absorbed orally and undergoes hepatic metabolism before being excreted.

Side Effects

Naltrexone Hydrochloride may cause a range of adverse reactions, which are categorized by frequency and severity.

Common Side Effects

  • Nausea: mild to moderate stomach upset often occurring early in therapy.
  • Headache: transient cranial pain reported by many patients.
  • Dizziness: sensation of light‑headedness, especially when standing quickly.
  • Fatigue: general tiredness or lack of energy.
  • Insomnia: difficulty falling or staying asleep.
  • Abdominal pain: cramp‑like discomfort in the stomach area.

Serious or Rare Side Effects

  • Hepatotoxicity: elevated liver enzymes or liver injury requiring monitoring.
  • Severe depression: mood changes that may lead to suicidal thoughts.
  • Allergic reactions: rash, itching, swelling, or anaphylaxis.
  • Hepatic failure: rare but life‑threatening liver dysfunction.
  • Severe rash or Stevens‑Johnson syndrome: skin blistering and detachment.

Precautions & Warnings

Before initiating Naltrexone Hydrochloride, clinicians should consider several safety measures to minimize risks.

  • Liver function assessment: obtain baseline hepatic enzymes and monitor periodically.
  • Depression monitoring: screen for mood disorders and advise patients to report worsening symptoms.
  • Avoid in acute hepatitis: contraindicated in patients with active liver inflammation.
  • Caution in renal impairment: adjust dosing and monitor renal function in severe cases.
  • Hypersensitivity check: discontinue if signs of allergic reaction appear.
  • Store at ambient temperature: keep below 25 °C in the original packaging, protected from moisture.

Avoid Interactions

Naltrexone Hydrochloride can interact with other medicines, influencing efficacy or safety.

Major Interactions (Avoid)

  • Opioid analgesics: antagonize pain relief and may precipitate withdrawal.
  • Disulfiram: combined hepatotoxic potential increases liver injury risk.
  • Hepatotoxic drugs (e.g., isoniazid, methotrexate): additive liver toxicity.

Moderate Interactions (Monitor Closely)

  • Benzodiazepines: enhanced sedation when used together.
  • Antidepressants (SSRIs, SNRIs): monitor for increased depressive symptoms.
  • Alcohol: concurrent use may intensify nausea and liver strain.

Frequently Asked Questions

Naltrexone Hydrochloride is prescribed to help manage opioid dependence and alcohol dependence. In opioid dependence, it reduces cravings and blocks the euphoric effects of opioids, supporting abstinence. For alcohol dependence, it helps maintain sobriety by diminishing the rewarding effects of alcohol and decreasing heavy‑drinking episodes.

Naltrexone works by competitively binding to μ‑, κ‑ and δ‑opioid receptors without activating them. This blocks both endogenous opioids and external opioid drugs from stimulating the receptors, preventing the reinforcing and euphoric signals that drive dependence, thereby reducing cravings and the risk of relapse.

The exact dose of Naltrexone Hydrochloride is determined by the prescribing clinician based on the individual’s medical condition, treatment goals, and response. Typical regimens involve a once‑daily oral tablet, but the prescriber may adjust the strength or frequency to suit the patient’s needs.

Safety data for Naltrexone Hydrochloride in pregnancy and lactation are limited, and the pregnancy category is listed as unknown. It should only be used when the potential benefit to the mother outweighs any possible risk to the fetus or infant, and the decision must be made by a qualified health professional.

To order, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, and will request verification of trade or institutional credentials. After confirmation, the team provides pricing, availability, shipping details (including any required temperature controls) and assists with import documentation.

The primary alternative for opioid dependence is methadone, a long‑acting opioid agonist that reduces withdrawal symptoms but maintains opioid activity. Naltrexone, by contrast, is an antagonist that blocks opioid receptors, offering a non‑opioid approach that eliminates opioid effects. For alcohol dependence, acamprosate is another option; unlike Naltrexone, acamprosate works on glutamate pathways rather than opioid receptors.

Naltrexone Hydrochloride tablets should be stored at ambient temperature, preferably below 25 °C. Keep the product in its original container, protect it from moisture and direct sunlight, and ensure the packaging remains sealed until use. No refrigeration is required for this oral formulation.

The medication is supplied as oral tablets that are taken with water, usually once daily as directed by a healthcare provider. Patients should follow the prescriber’s instructions regarding timing (e.g., after opioid detoxification) and should not consume opioid‑containing products while on therapy.

Serious risks include hepatotoxicity, which may manifest as elevated liver enzymes or liver injury, and severe depression that can lead to suicidal thoughts. Allergic reactions such as rash, swelling, or anaphylaxis are also possible. Patients should be monitored regularly for liver function and mood changes, and any severe symptoms should prompt immediate medical attention.

Naltrexone is contraindicated in individuals with acute hepatitis, severe liver failure, or known hypersensitivity to the drug. It should also be avoided in patients currently receiving opioid analgesics or opioid maintenance therapy, as it can precipitate withdrawal. Clinicians must assess liver function and opioid use status before initiating treatment.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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