Amphonex

Amphonex contains Liposomal Amphotericin B, a sterile, non-pyrogenic lyophilized powder for intravenous infusion. It is an antifungal antibiotic that acts by binding to sterols (ergosterol) in the cell membrane of susceptible fungi, leading to alterations in cell permeability and subsequent cell death. The liposomal formulation significantly reduces systemic toxicity, particularly nephrotoxicity, compared to conventional Amphotericin B deoxycholate.

Dosage by Body Weight

Must be administered strictly under medical supervision via slow intravenous infusion (typically over 2 hours). Dosage is highly individualized and calculated based on body weight, indication, and renal function. Standard therapeutic dosing ranges from 1 mg/kg/day to 5 mg/kg/day depending on the severity of the infection.

  1. Body Weight
    Below 5 kg
    Dose
    3 mg/kg per day (e.g., up to 12 mg)
    Frequency
    Once daily via IV infusion
    Tracking Notes
    Requires strict monitoring in a neonatal/pediatric intensive care setting. Dose must be meticulously calculated based on exact body weight.
  2. Body Weight
    5-7 kg
    Dose
    15 mg to 21 mg (based on 3 mg/kg/day)
    Frequency
    Once daily via IV infusion
    Tracking Notes
    Administer over a period of approximately 120 minutes. Pre-infusion hydration is recommended.
  3. Body Weight
    8-10 kg
    Dose
    24 mg to 30 mg (based on 3 mg/kg/day)
    Frequency
    Once daily via IV infusion
    Tracking Notes
    Regularly monitor serum creatinine, potassium, and magnesium levels during treatment.
  4. Body Weight
    11-15 kg
    Dose
    33 mg to 45 mg (based on 3 mg/kg/day)
    Frequency
    Once daily via IV infusion
    Tracking Notes
    Pre-medication with antihistamines or antipyretics may be considered to manage infusion-related reactions.
  5. Body Weight
    16-20 kg
    Dose
    48 mg to 60 mg (based on 3 mg/kg/day)
    Frequency
    Once daily via IV infusion
    Tracking Notes
    Ensure complete dissolution and filtration using the provided filter during preparation as per clinical guidelines.

Formulation

Injection

Purpose

Treatment of severe, life-threatening systemic fungal infections (such as invasive aspergillosis, cryptococcal meningitis, disseminated candidiasis, and mucormycosis) and visceral leishmaniasis (kala-azar).

Generic Name

Amphotericin B (Liposomal)

Scheduled Drug

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

Alternatives

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.