Metadon Alkaloid (Methadone Hydrochloride)

Methadone works by binding to mu‑opioid receptors in the brain and spinal cord, producing analgesia and suppressing the neurochemical pathways that cause opioid withdrawal. Its additional NMDA antagonism and inhibition of serotonin and norepinephrine reuptake enhance its pain‑relieving and anti‑withdrawal effects.

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.

Data on methadone use in pregnancy and lactation are limited. It may be prescribed when the benefits to the mother outweigh potential risks to the fetus or infant, but clinicians should discuss potential neonatal withdrawal and monitor closely.

To 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 required import documentation.

Both methadone and buprenorphine are opioid agonists used for dependence treatment. Methadone is a full mu‑opioid receptor agonist with a longer half‑life, offering more potent analgesia but a higher risk of respiratory depression. Buprenorphine is a partial agonist, generally associated with a lower overdose risk but may provide less analgesic effect for severe pain.

Store at ambient temperature, preferably below 25 °C. Keep the product in its original packaging, protect it from moisture, excessive heat and direct sunlight to maintain stability.

Metadon Alkaloid is administered orally. The tablet or capsule should be swallowed whole with a glass of water. Dosing times and any food restrictions are determined by the prescribing clinician.

The most serious risks include respiratory depression, especially after dose escalation or when combined with other depressants; QT interval prolongation leading to cardiac arrhythmias; and severe allergic reactions. Patients should be monitored closely for these events.

Methadone is contraindicated in individuals with known hypersensitivity to methadone, those taking monoamine oxidase inhibitors, and patients with significant uncontrolled cardiac arrhythmias or severe respiratory insufficiency. Caution is also advised for patients with severe hepatic impairment.