Simplovir 1 gm/vial (IV Infusion)

1 gm vial: ৳ 1,000.00

Medicine Details

Indications

  • Treatment of acute clinical manifestations of Herpes simplex virus in immunocompromised patients
  • Treatment of severe primary or non-primary genital herpes in immune competent patients
  • Treatment of Varicella zoster virus infection in immunocompromised patients
  • Treatment of Herpes zoster (shingles) in immune competent patients with severe acute local or systemic manifestations
  • Treatment of Herpes simplex encephalitis

Pharmacology

  • Interferes with DNA synthesis of Herpes simplex virus and Varicella zoster virus
  • Inhibits viral replication
  • Dependence on intracellular conversion of the drug to Acyclovir Triphosphate

Dosage

  • 5 mg/kg every 8 hours for Herpes simplex infection in normal or immunocompromised immune status
  • 5 mg/kg every 8 hours for very severe Herpes zoster infection (shingles) in normal immune status
  • 10 mg/kg every 8 hours for Varicella zoster infection in immunocompromised immune status
  • 10 mg/kg every 8 hours for Herpes simplex encephalitis in normal or immunocompromised immune status

Administration

  • Recommended duration of administration: 5-7 days for most infections, at least 10 days for Herpes simplex encephalitis
  • Should be administered by slow intravenous infusion over a one-hour period

Interaction

  • Co-administration of probenecid with Simplovir increases mean Simplovir half-life
  • Urinary excretion and renal clearance reduced with co-administration of probenecid
  • Significant increase in plasma levels of Simplovir in patients over 60 years of age with concurrent use of diuretics

Contraindications

  • Contraindicated in patients hypersensitive to Acyclovir or Valacyclovir

Side Effects

  • Lethargy, obtundation, tremors, confusion, hallucinations, agitation, somnolence, psychosis, convulsions and coma
  • Phlebitis, nausea, vomiting, reversible increases in liver-related enzymes, pruritus, urticaria, rashes
  • Increases in blood urea and creatinine
  • Local inflammatory reactions if infused into extracellular tissues

Pregnancy & Lactation

  • Pregnancy category B
  • Not well studied in pregnant women
  • Should only be administered to nursing mothers if benefits to mother outweigh potential risks to the baby

Precautions & Warnings

  • Intended for intravenous infusion only
  • Reconstituted IV infusion with pH of approximately 11.0 should not be administered by mouth
  • Must be given over a period of at least one hour to avoid renal tubular damage
  • Concomitant use of other nephrotoxic drugs, pre-existing renal disease, and dehydration increase risk of renal impairment

Use in Special Populations

  • Pediatric use: Dose calculation based on body surface area
  • Geriatric use: Special attention to dosage reduction due to low creatinine clearance
  • In patients with renal impairment: Dosage modification based on creatinine clearance

Overdose Effects

  • Elevations of serum creatinine and blood urea nitrogen
  • Renal failure
  • Neurological effects - confusion, hallucinations, agitation, seizures, and coma
  • Adequate hydration essential to reduce possibility of crystal formation in the urine

Therapeutic Class

  • Herpes simplex & Varicella-zoster virus infections

Duration of Treatment

  • Recommended duration: 5-7 days for most infections, at least 10 days for Herpes simplex encephalitis

Reconstitution

  • 250 mg vial reconstituted with 10 ml Water for Injection or Sodium Chloride Intravenous Infusion (0.9% w/v)
  • 500 mg vial reconstituted with 10 ml Water for Injection or Sodium Chloride Intravenous Infusion (0.9% w/v)

Storage Conditions

  • Store at 15°C to 25°C
  • Protected from light and moisture
  • Keep out of the reach of children

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