Proper Use

Drug information provided by: IBM Micromedex

This medicine will not cure CMV retinitis, although it may help keep it from getting worse. In addition, it will not help other symptoms of CMV (for example, in the lungs or colon).


The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For parenteral-local dosage form (ophthalmic injection):
    • For CMV retinitis:
      • Adults—The usual starting dose is 330 micrograms injected into the eye once every other week for two doses. Then the same dose is used once every four weeks for as long as it is needed.
      • Children—Use and dose must be determined by your doctor.