Product image of Metadon Ep Extractumpharma (Methadone Hydrochloride) supplied by GNH India

Metadon Ep Extractumpharma

Active Ingredient:
Methadone Hydrochloride
Origin:
EU

Metadon Ep Extractumpharma (Methadone Hydrochloride)

Methadone, the active ingredient in Metadon EP Extractumpharma, is a synthetic opioid presented as an oral formulation for oral use. It is used to treat opioid dependence and to provide analgesia for chronic pain in adults.

GNH India supplies Metadon EP Extractumpharma as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Extractumpharma Co.Ltd.

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Indications & Clinical Uses

Methadone is employed in the management of opioid‑related disorders and pain syndromes.

  • Opioid dependence: stabilises patients on maintenance therapy and reduces withdrawal symptoms.
  • Chronic pain: provides long‑acting analgesia for severe, persistent pain when other opioids are unsuitable.

How It Works

  • Methadone acts as a full agonist at the mu‑opioid receptor, producing analgesia and suppressing opioid withdrawal by activating the same pathways as endogenous endorphins. It also blocks NMDA receptors and inhibits reuptake of serotonin and norepinephrine, contributing to its efficacy in pain modulation and opioid substitution therapy.

Side Effects

Methadone may cause a range of adverse reactions, from mild to severe.

Common Side Effects

  • Nausea and vomiting
  • Constipation
  • Sweating or flushing
  • Drowsiness or fatigue
  • Dry mouth
  • Dizziness or light‑headedness

Serious or Rare Side Effects

  • Respiratory depression, especially after dose escalation
  • QT‑interval prolongation leading to cardiac arrhythmia
  • Severe hypotension or syncope
  • Adrenal insufficiency
  • Hepatotoxicity
  • Allergic reactions such as rash or angioedema

Precautions & Warnings

Methadone requires careful monitoring and patient education before and during therapy.

  • Cardiac assessment: obtain baseline ECG and monitor QT interval in patients with cardiac risk factors.
  • Respiratory monitoring: observe for signs of respiratory depression, particularly during initiation or dose changes.
  • Hepatic function: evaluate liver enzymes and adjust dose in hepatic impairment.
  • Dependence potential: assess history of substance use disorder and provide counseling.
  • Discontinuation: taper gradually to avoid precipitated withdrawal.
  • Store at room temperature: keep in original container, protect from moisture and direct sunlight.

Avoid Interactions

Methadone interacts with several drug classes that can alter its safety or efficacy.

Major Interactions (Avoid)

  • Concomitant use of other central nervous system depressants (e.g., benzodiazepines, barbiturates) may cause profound respiratory depression.
  • Monoamine oxidase inhibitors (MAOIs) can precipitate serotonin syndrome.
  • Drugs that markedly prolong QT interval (e.g., certain antiarrhythmics, fluoroquinolones) increase risk of cardiac arrhythmia.
  • Strong CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin) can raise methadone plasma levels.

Moderate Interactions (Monitor Closely)

  • CYP3A4 inducers (e.g., rifampicin, carbamazepine) may reduce methadone concentrations.
  • Certain antidepressants (e.g., SSRIs, SNRIs) may modestly increase QT interval.
  • Anticholinergic agents can exacerbate constipation and urinary retention.
  • Herbal supplements such as St. John’s wort may lower methadone exposure.

Frequently Asked Questions

Metadon EP Extractumpharma contains methadone hydrochloride and is used primarily for opioid dependence treatment and as an analgesic in chronic pain management. It helps prevent withdrawal symptoms in patients undergoing opioid substitution therapy and provides long‑acting pain relief when other opioids are not appropriate.

Methadone is a full agonist at the mu‑opioid receptor, which mimics the action of natural endorphins to produce analgesia and reduce cravings. It also blocks NMDA receptors and inhibits the reuptake of serotonin and norepinephrine, contributing to its effectiveness in both pain control and opioid withdrawal suppression.

The dose of methadone is individualized. A qualified prescriber determines the appropriate starting dose, titration schedule, and maintenance dose based on the patient’s clinical condition, prior opioid exposure, and response to therapy. Dosage adjustments are made under medical supervision.

Safety data for methadone in pregnancy and lactation are limited. Methadone may be used when the benefits outweigh potential risks, but it should be prescribed by a specialist familiar with opioid dependence in pregnant or nursing women. Breastfeeding mothers should discuss risks with their healthcare provider.

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 (including any cold‑chain requirements) and necessary import documentation.

Methadone is a long‑acting synthetic opioid with a well‑established efficacy profile. Compared with buprenorphine, methadone provides full mu‑receptor agonism, which can be advantageous for patients with high opioid tolerance, but it requires more stringent monitoring due to a higher risk of respiratory depression and cardiac effects.

Metadon EP Extractumpharma should be stored at room temperature, below 25 °C, in its original packaging. Protect the product from moisture, excessive heat and direct sunlight to maintain its stability and potency throughout its shelf life.

The product is intended for oral administration. Patients should swallow the tablet or capsule whole with water, unless otherwise directed by a healthcare professional. Doses are taken at the same time each day to maintain stable plasma concentrations.

The most serious risks include respiratory depression, especially after dose escalation or when combined with other CNS depressants, and QT‑interval prolongation that can lead to life‑threatening arrhythmias. Regular monitoring of respiratory function and cardiac ECG is essential to mitigate these risks.

Methadone is contraindicated in patients with known hypersensitivity to methadone, those taking monoamine oxidase inhibitors, and individuals with severe uncontrolled cardiac arrhythmias or significant respiratory compromise. Caution is also advised for patients with severe hepatic impairment or a history of substance misuse without proper supervision.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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