Cephapirin Sodium
Cephapirin Sodium is a first-generation cephalosporin antibiotic historically used in both human and veterinary medicine. It works by inhibiting bacterial cell wall synthesis, making it effective against susceptible gram-positive bacteria. While largely replaced by newer agents in human medicine, it has been used for respiratory infections, urinary tract infections, and skin infections.
Cephapirin Sodium is an older first-generation cephalosporin antibiotic used to treat bacterial infections by disrupting cell wall synthesis.
Key facts at a glance
- RxNorm
- 42562
- Generic
- Cephapirin Sodium
- Class
- pin-variant
- 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.
Treats bacterial infections including respiratory tract infections, urinary tract infections, skin and soft tissue infections, and has been used in veterinary medicine for mastitis in cattle.
As a beta-lactam antibiotic, it inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), weakening the cell wall and leading to bacterial death.
Cross-reactivity with penicillin allergies is possible; injectables may cause local injection site reactions; resistance can develop with prolonged use; not currently marketed in many countries.
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 27, 2026. · Read our editorial policy