If you are:
Only When Necessary:
Precaution: INSUFF HUMAN DATA AVAIL; POTENTIAL FOR SERIOUS ADVERSE EFFECTS IN INFANT
An adult over 60:
management or monitoring precaution: Renal-Caution in elderly with renal impairment. Monitor renal function and adjust dose as necessary. Maintain hydration.
Giving foscarnet-sodium-bottle-infusion to a child under 12:
Severe Precaution: Safety and efficacy in children not established. Concern for bone deposition.