Matrifen

Fentanyl, the active ingredient in Matrifen, is a opioid analgesic presented as a transdermal patch for transdermal use. It treats severe chronic pain and cancer pain in patients requiring continuous opioid therapy.

GNH USA supplies Matrifen as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide.

Matrifen (fentanyl) is used in the management of pain conditions that require strong opioid therapy.

- Severe chronic non‑cancer pain: provides continuous analgesia for patients with long‑term pain unresponsive to weaker opioids. - Cancer‑related pain: delivers steady opioid levels to control moderate to severe pain in oncology patients. - End‑of‑life pain management: ensures consistent pain relief for patients in palliative care settings.

Fentanyl transdermal therapy may be associated with a range of adverse reactions, which are grouped by frequency and severity.

Common Side Effects: - Nausea: feeling of sickness or urge to vomit. - Constipation: reduced bowel movements and hard stools. - Dizziness: light‑headedness or unsteady sensation. - Somnolence: increased sleepiness or fatigue.

Serious or Rare Side Effects: - Respiratory depression: slowed or shallow breathing that can be life‑threatening. - Severe hypotension: marked drop in blood pressure causing dizziness or fainting. - Opioid dependence or withdrawal: risk of addiction and withdrawal symptoms upon abrupt discontinuation.

When prescribing Matrifen, clinicians should observe several safety measures to minimize risk.

- Assess opioid tolerance: confirm patient has prior exposure to strong opioids before initiating therapy. - Evaluate respiratory function: perform baseline assessment and monitor for depression. - Monitor for signs of addiction: watch for drug‑seeking behavior and dependence. - Adjust dose in hepatic impairment: reduce dosage or extend interval in patients with liver dysfunction. - Use with caution in elderly: start at the lowest effective dose and observe closely. - Store at room temperature: keep patch in original packaging, protect from moisture and light.

Fentanyl may interact with other medicines, altering its effect or increasing adverse reactions.

Major Interactions (Avoid): - Central nervous system depressants (e.g., benzodiazepines): can cause profound sedation and respiratory depression. - Monoamine oxidase inhibitors: increase risk of serotonin syndrome and severe hypotension. - Strong CYP3A4 inhibitors (e.g., ketoconazole): raise fentanyl plasma levels and risk of toxicity.

Moderate Interactions (Monitor Closely): - CYP3A4 inducers (e.g., rifampin): may reduce fentanyl effectiveness. - Diuretics: can enhance hypotensive effects when combined with fentanyl.