Product image of Methadone Crescent Pharma (Methadone Hydrochloride) supplied by GNH India

Methadone Crescent Pharma

Active Ingredient:
Methadone Hydrochloride
Origin:
EU

Methadone Crescent Pharma (Methadone Hydrochloride)

Methadone, the active ingredient in Methadone Crescent Pharma, is a synthetic opioid presented as an oral formulation for oral use. It is employed in the management of opioid dependence and for the relief of severe chronic pain in appropriate patients.

GNH India supplies Methadone Crescent Pharma as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics across global markets, adhering to stringent quality standards and regulatory requirements. The company ensures consistent product availability and supports regulatory compliance for its clients.

Manufacturer / TM Owner

Crescent Pharma Limited

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Indications & Clinical Uses

  • Methadone is a synthetic opioid used in the management of opioid‑related disorders and severe pain.
  • Opioid dependence: maintenance therapy to reduce cravings and illicit opioid use.
  • Severe chronic pain: long‑term analgesia for pain unresponsive to other opioids.
  • Opioid withdrawal: alleviation of withdrawal symptoms during detoxification.

How It Works

  • Methadone acts as a full agonist at the μ‑opioid receptor, producing analgesia and suppressing opioid cravings. It also exhibits antagonist activity at the N‑methyl‑D‑aspartate (NMDA) receptor, which may contribute to reduced tolerance development and modulation of neuropathic pain pathways. By binding to these receptors, methadone stabilizes neuronal signaling and diminishes withdrawal phenomena. Its long half‑life provides sustained receptor occupancy, allowing once‑daily dosing in many treatment protocols.

Side Effects

Methadone may be associated with a range of adverse reactions, varying in frequency and severity.

Common Side Effects

  • Nausea: upset stomach and possible vomiting.
  • Constipation: reduced bowel motility.
  • Drowsiness: feeling unusually sleepy or fatigued.
  • Sweating: excessive perspiration unrelated to activity.
  • Dry mouth: reduced salivation leading to discomfort.
  • Weight gain: increased appetite or fluid retention.

Serious or Rare Side Effects

  • Respiratory depression: slowed or shallow breathing that can be life‑threatening.
  • QT interval prolongation: cardiac electrical changes that may cause arrhythmias.
  • Severe hypotension: marked drop in blood pressure.
  • Adrenal suppression: impaired cortisol production.
  • Seizures: rare occurrence of convulsive episodes.
  • Allergic reactions: rash, itching, or anaphylaxis.

Precautions & Warnings

  • When prescribing methadone, careful clinical monitoring and patient education are essential.
  • Dose titration: adjust gradually under medical supervision to avoid overdose.
  • Monitoring: perform regular respiratory and cardiac (ECG) assessments.
  • Contraindications: avoid in patients with severe respiratory depression or acute asthma.
  • Pregnancy: use only if potential benefit outweighs potential risk to the fetus.
  • Drug dependence: monitor for signs of misuse or diversion.
  • Store at ambient temperature: keep in the original container, protect from moisture and light.

Avoid Interactions

Methadone interacts with several medication classes; awareness of interaction severity guides clinical decisions.

Major Interactions (Avoid)

  • CYP3A4 inhibitors: may increase methadone plasma concentrations and risk of toxicity.
  • QT‑prolonging drugs: additive risk of cardiac arrhythmias.
  • Benzodiazepines: enhanced central nervous system depression.

Moderate Interactions (Monitor Closely)

  • CYP2B6 inducers: may reduce methadone levels, compromising efficacy.
  • Antiretrovirals (e.g., efavirenz): may alter methadone metabolism.
  • Selective serotonin reuptake inhibitors (SSRIs): may affect methadone plasma concentrations.

Frequently Asked Questions

Methadone Crescent Pharma is indicated for opioid dependence maintenance therapy, helping to reduce cravings and prevent relapse, and for the management of severe chronic pain when other analgesics are insufficient. It may also be used to alleviate withdrawal symptoms during detoxification under medical supervision.

Methadone works primarily as a full agonist at the μ‑opioid receptors, providing analgesia and suppressing opioid cravings. It also blocks NMDA receptors, which can help limit the development of tolerance and modulate certain types of neuropathic pain, contributing to its overall therapeutic effect.

The appropriate dose of methadone is individualized and must be determined by a qualified prescriber based on the patient’s clinical condition, prior opioid exposure, and response to therapy. Dosing is typically started low and titrated gradually to achieve the desired effect while minimizing adverse reactions.

Data on methadone use during pregnancy and lactation are limited. It may be prescribed if the potential benefits to the mother outweigh potential risks to the fetus or infant. Clinicians should evaluate each case carefully, monitor closely, and discuss possible neonatal withdrawal with the patient.

To place an order, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details, and any necessary import documentation.

Methadone is often compared with buprenorphine, another opioid used for dependence treatment. Methadone provides full μ‑opioid agonism and a longer half‑life, allowing once‑daily dosing, but carries a higher risk of respiratory depression. Buprenorphine is a partial agonist with a ceiling effect on respiratory depression, which may improve safety in some patients.

Methadone should be stored at ambient temperature, preferably below 25 °C, in its original packaging to protect it from moisture, light, and accidental contamination. Keep the product out of reach of children and handle it in accordance with local controlled‑substance regulations.

Methadone is administered orally, typically as a tablet or liquid formulation. The product should be swallowed whole with water and not crushed or chewed unless specifically instructed by a healthcare professional. Dosing frequency varies according to the therapeutic indication and patient response.

The most serious risks include respiratory depression, especially after dose increases or when combined with other central nervous system depressants, and cardiac arrhythmias due to QT‑interval prolongation. Overdose can be life‑threatening, and patients should be educated to seek immediate medical attention if they experience severe drowsiness, shallow breathing, or chest pain.

Methadone is contraindicated in individuals with known hypersensitivity to the drug, severe respiratory depression, acute asthma attacks, or uncontrolled severe cardiac conditions such as significant QT prolongation. It should also be avoided in patients with paralytic ileus or those who cannot be closely monitored for safety.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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