or 5-fluorocytosine, a fluorinated pyrimidine analogue, is a synthetic antimycotic drug.
It is structurally related to the cytostatic fluorouracil and to floxuridine. It is available in oral and in some countries also in injectable form. A common brand name is Ancobon®. The drug is dispensed in capsules of 250 mg and 500 mg strength. The injectable form is diluted in 250ml saline solution to contain 2.5 grams totally (10mg per ml). The solution is physically incompatible with other drugs including amphotericin B.
