One of the most debilitating symptoms of food poisoning is weakness. The infection can make it difficult to complete daily activities. Weakness will usually last for a few days, depending on the severity. The symptom is often the result of dehydration from diarrhea or vomiting. It can also be related to a drop in blood sugar from low food and beverage intake. It is important to drink fluids. If you can't hold them down, seek medical attention.

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