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Virazole

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Virazole

Virazole

OVERDOSE

No overdosage with VIRAZOLE (ribavirin) by aerosol administration has been reported in humans. The LDM in mice is 2 g orally and is associated with hypoactivity and gastrointestinal symptoms (estimated human equivalent dose of 0.17 g/kg, based on body surface area conversion). The mean plasma half-life after administration of aerosolized VIRAZOLE (ribavirin) for pediatric patients is 9.5 hours. VIRAZOLE (ribavirin) is concentrated and persists in red blood cells for the life of the erythrocyte (see Pharmacokinetics).

CONTRAINDICATIONS

VIRAZOLE (ribavirin) is contraindicated in individuals who have shown Hypersensitivity to the drug or its components, and in women who are or may become pregnant during exposure to the drug. Ribavirin has demonstrated significant teratogenic and/or embryocidal potential in all animal species in which adequate studies have been conducted (rodents and rabbits). Therefore, although clinical studies have not been performed, it should be assumed that VIRAZOLE (ribavirin) may cause fetal harm in humans. Studies in which the drug has been administered systemically demonstrate that ribavirin is concentrated in the red blood cells and persists for the life of the erythrocyte.

Last reviewed on RxList: 1/26/2009
This monograph has been modified to include the generic and brand name in many instances.

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