Botulinum Neurotoxin B Immune Fab2, Equine
Botulinum Neurotoxin B Immune Fab2, Equine is an antitoxin product derived from equine (horse) sources that contains F(ab')2 antibody fragments. It is used to treat botulism caused by type B botulinum toxin by binding to and neutralizing the toxin in circulation. This medication is administered in hospital settings to patients with suspected or confirmed type B botulism exposure.
Equine-derived antitoxin that neutralizes type B botulinum toxin to treat botulism poisoning.
Key facts at a glance
- RxNorm
- 1722683
- Generic
- Botulinum Neurotoxin B Immune Fab2, Equine
- 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.
Treatment of botulism caused by type B botulinum neurotoxin, including foodborne and wound botulism. Used in patients with confirmed or suspected exposure to type B botulinum toxin when rapid neutralization of circulating toxin is needed.
Contains F(ab')2 antibody fragments derived from horses immunized with botulinum toxoid. These fragments bind to and neutralize circulating type B botulinum neurotoxin, preventing the toxin from binding to presynaptic nerve terminals and causing paralysis.
Administered intravenously in healthcare settings by trained professionals. Risk of hypersensitivity reactions including anaphylaxis, particularly in patients with known horse serum allergy. Serum sickness may occur. Efficacy is greatest when administered early before toxin binds to nerves. Test dose may be required.
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 25, 2026. · Read our editorial policy