Methadon G.L. Pharma (Methadone Hydrochloride)

Methadone acts as a full agonist at the µ‑opioid receptors in the central nervous system, producing analgesia and reducing the craving for other opioids. It also blocks NMDA receptors, which contributes to its effectiveness in neuropathic pain and limits the development of tolerance. Metabolism occurs mainly via hepatic CYP3A4 and CYP2B6 enzymes.

The dose of methadone is individualized for each patient. A qualified prescriber determines the starting amount, titration schedule, and maintenance dose based on the clinical condition, prior opioid exposure, and response to therapy. Dosing adjustments are made under medical supervision to achieve therapeutic goals while minimizing adverse effects.

Data on methadone use during pregnancy and lactation are limited. It may be prescribed if the potential benefits to the mother outweigh the possible risks to the fetus or infant. Close monitoring is required, and the decision should be made jointly by the prescriber, obstetrician, and patient, following local regulatory guidance.

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, and will request verification of trade or institutional credentials. After confirmation, the sales team provides pricing, availability, shipping details and assists with any required import documentation.

Methadone is often compared with buprenorphine, another opioid used for dependence treatment. Methadone provides full µ‑opioid receptor agonism, allowing once‑daily dosing but carries a higher risk of respiratory depression and cardiac QT prolongation. Buprenorphine is a partial agonist with a ceiling effect on respiratory depression, making it safer in some settings, though it may be less effective for severe pain.

Methadon G.L. Pharma should be stored at ambient temperature, preferably below 25 °C. Keep the product in its original packaging, protect it from moisture, heat and direct sunlight. Do not store in a location where temperature fluctuations are common, and keep it out of reach of children.

The medication is supplied as an oral formulation intended for swallowing whole with a glass of water. It should be taken exactly as prescribed, usually once daily for maintenance therapy, but the dosing frequency may vary based on clinical judgment. Crushing or chewing the tablet is not recommended unless specifically instructed by a healthcare professional.

The most critical risks include respiratory depression, which can be fatal if dosing is excessive or combined with other depressants, and QT interval prolongation, which may lead to serious cardiac arrhythmias. Overdose, severe allergic reactions (anaphylaxis), and profound sedation are also serious concerns that require immediate medical attention.

Methadon G.L. Pharma is contraindicated in individuals with known hypersensitivity to methadone or any excipients, patients with severe uncontrolled respiratory depression, and those with significant cardiac arrhythmias or a prolonged QT interval. Caution is also advised for patients with acute severe asthma, paralytic ileus, or those taking medications that strongly inhibit CYP3A4 without appropriate monitoring.