Brand Names

How to Use

To ensure the best response, foscarnet must be given for the full time of treat. Always this drug works best when there is a constant amount in the blood. To help keep the amount constant, foscarnet must be given on a regular schedule.

Several glasses of water must be taken every day, unless otherwise directed by your family doctor. Drinking extra water will help to prevent some unwanted effects foscarnet has on the kidneys .

This drug may cause sores on the genitals - sex organs. Washing your genitals after urination may decrease the risk of your developing this problem.

Dosage

• For injection dosage form:
  • For cytomegalovirus - CMV retinitis induction - first stage of dosing:
    • Adults and children The usual dose is 60 milligrams - mg per kilogram - kg - 27.3 mg per pound of body weight every eight hours for fourteen to twenty-one days. Each dose is injected slowly into a vein by an infusion pump over at least one hour.
  • For CMV retinitis maintenance - second stage of dosing:
    • Adults and children The usual dose is 90 to 120 mg per kg - 41 to 54.5 mg per pound of body weight once a day. This dose is injected slowly into a vein by an infusion pump over at least two hours.
  • For herpes simplex infections:
    • Adults and children The usual dose is 40 mg per kg - 18.2 mg per pound of body weight given either every eight or every twelve hours. This dose is injected slowly into a vein by an infusion pump over at least one hour. Treatment is usually continued for two to three weeks or until the infection in healed.