In botulism management, why are antibiotics not the primary treatment, and what is used instead?

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Botulism management focuses on blocking the toxin's ongoing effects and supporting vital body functions, not on killing the bacteria with antibiotics. The botulinum toxin released by the bacteria binds to nerve terminals and prevents acetylcholine release, causing flaccid paralysis that can progress to respiratory failure. A botulinum antitoxin works by binding and neutralizing circulating toxin, potentially stopping progression if given early; however, once toxin has bound to nerves, antibiotics won’t reverse that binding and recovery depends on nerve terminal regeneration over weeks. Therefore, the best approach is supportive care—especially respiratory support when needed—plus administration of botulinum antitoxin when indicated. In wound botulism, antibiotics may be used to eradicate the bacterial source and prevent new toxin production, but they do not replace the need for antitoxin and supportive care.