Ribasphere
Virazole is the brand name for ribavirin, an antiviral medication used primarily to treat severe respiratory syncytial virus (RSV) infections in infants and young children, often administered as an inhaled aerosol. It has also been used in combination therapy for chronic hepatitis C, though newer direct-acting antivirals have largely replaced this use.
Virazole is an inhaled antiviral used mainly for severe RSV infections in young children.
Key facts at a glance
- RxNorm
- 204276
- Generic
- Virazole
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment of severe respiratory syncytial virus (RSV) infection in hospitalized infants and young children. Historically used as part of combination therapy for chronic hepatitis C (now largely replaced by newer agents). May be considered for other viral infections in certain clinical situations.
Ribavirin is a nucleoside analogue that interferes with viral RNA synthesis and replication. It appears to deplete cellular nucleotide pools and may induce lethal mutations in viral genomes, inhibiting viral protein production.
Highly teratogenic—strict contraception required during and for periods after treatment. Administered via nebulizer for RSV; oral formulations used for hepatitis C. Close monitoring needed for respiratory and hematologic effects. Use during pregnancy is contraindicated; healthcare personnel should follow safety protocols when administering inhaled formulation.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy