Product image of Misyo (Methadone Hydrochloride) supplied by GNH India

Misyo

Active Ingredient:
Methadone Hydrochloride
Origin:
EU

Misyo (Methadone Hydrochloride)

Methadone Hydrochloride, the active ingredient in Misyo, is a synthetic opioid presented as an oral formulation for oral use. It is indicated for opioid dependence treatment and for the management of chronic severe pain in adult patients. The medication is formulated to provide long‑acting opioid receptor activation, allowing stable plasma concentrations and reducing the need for frequent dosing. GNH India supplies Misyo as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. All shipments meet EU regulatory requirements and are supported by comprehensive documentation.

Manufacturer / TM Owner

Inn-Farm D.O.O.

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Indications & Clinical Uses

  • Methadone Hydrochloride is used in opioid‑related pathways to manage dependence and pain.
  • Opioid dependence treatment: reduces withdrawal symptoms and cravings, facilitating stabilization.
  • Chronic pain management: provides long‑acting analgesia for severe, persistent pain.
  • Opioid substitution therapy: maintains steady opioid levels to prevent illicit drug use.

How It Works

  • Methadone Hydrochloride acts as a full agonist at the mu‑opioid receptor, binding with high affinity to activate the receptor and produce analgesia while also suppressing the neurochemical pathways that generate opioid withdrawal. Its long half‑life sustains receptor occupancy, allowing once‑daily dosing for maintenance therapy and continuous pain control.

Side Effects

Methadone Hydrochloride may cause a range of adverse reactions, which are categorized by frequency.

Common Side Effects

  • Constipation
  • Nausea
  • Drowsiness
  • Dry mouth

Serious or Rare Side Effects

  • Respiratory depression
  • QT interval prolongation
  • Severe hypotension

Precautions & Warnings

  • When prescribing Misyo, clinicians should consider several safety measures.
  • Assess patient history: evaluate prior opioid use and comorbidities.
  • Monitor respiratory function: watch for depression, especially during initiation.
  • Evaluate cardiac status: consider QT interval monitoring.
  • Avoid use in acute respiratory depression: contraindicated in patients with severe respiratory compromise.
  • Adjust dose in hepatic impairment: reduce dosage as needed.
  • Store at room temperature: keep in original container, protect from moisture.

Avoid Interactions

Methadone Hydrochloride interacts with several drug classes; awareness of these interactions helps prevent adverse events.

Major Interactions (Avoid)

  • CYP3A4 inhibitors (e.g., ketoconazole): may increase methadone levels and risk of toxicity.
  • CNS depressants (e.g., benzodiazepines): can cause profound respiratory depression.
  • QT‑prolonging agents (e.g., quinidine): increase risk of cardiac arrhythmia.

Moderate Interactions (Monitor Closely)

  • CYP3A4 inducers (e.g., rifampin): may reduce efficacy.
  • Anticholinergics (e.g., atropine): may exacerbate constipation.

Frequently Asked Questions

Misyo contains methadone hydrochloride and is prescribed for opioid dependence treatment and for the management of chronic, severe pain. It helps reduce withdrawal symptoms in people with opioid use disorder and provides long‑acting analgesia for patients requiring continuous pain control.

Methadone hydrochloride is a full agonist at the mu‑opioid receptor. By binding to this receptor, it activates the same pathways as other opioids, producing analgesia and suppressing the neurochemical signals that cause withdrawal, while its long half‑life maintains steady receptor occupancy.

The appropriate dose of Misyo is individualized by the prescribing clinician based on factors such as the patient’s opioid tolerance, treatment goals, liver function, and response to therapy. Dosage adjustments are made during initiation and maintenance phases to achieve optimal control of withdrawal or pain.

Safety data for methadone hydrochloride in pregnancy and lactation are limited. It may be used when the benefits outweigh potential risks, but clinicians should assess each case carefully and monitor both mother and infant for adverse effects. Breastfeeding decisions should follow local guidelines and professional advice.

To order Misyo, 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.

Both methadone (Misyo) and buprenorphine are used for opioid dependence, but methadone is a full mu‑opioid agonist offering stronger analgesia and a longer half‑life, while buprenorphine is a partial agonist with a ceiling effect on respiratory depression. Choice depends on patient history, treatment setting, and risk‑benefit considerations.

Misyo should be stored at room temperature, below 25 °C, in its original packaging to protect it from moisture and light. Keep the product out of reach of children and do not store in areas with high humidity or extreme temperatures.

Misyo is administered orally, typically as a tablet or solution taken by mouth. The exact route (tablet or liquid) and dosing schedule are determined by the prescriber, who will provide instructions on how and when to take the medication for optimal effect.

The most serious risks include respiratory depression, which can be life‑threatening, especially when combined with other CNS depressants, and cardiac arrhythmias related to QT interval prolongation. Patients should be monitored closely during initiation and dose adjustments to mitigate these hazards.

Misyo is contraindicated in individuals with acute respiratory depression, severe asthma, known hypersensitivity to methadone, or uncontrolled cardiac arrhythmias. Caution is also advised for patients with significant hepatic impairment, as dose reductions may be required.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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