What Is Botulism?
Reviewed: Dr. Gromatzky
3. Foodborne Botulism Symptoms
Once the toxin has been ingested, the symptoms will generally start to appear at around 12 to 36 hours afterwards. If only a small amount of the toxin was ingested, however, then it might take a few days before symptoms appear. When symptoms do arise, the patient can experience a dry mouth and experience trouble speaking and swallowing.
The patient can also find that their facial muscles become weak and their eyelids droop. They might also experience changes in their vision, and they can also have difficulty breathing. Abdominal cramps, nausea, and vomiting can take place. The condition can even cause paralysis.
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