How Long Will Food Poisoning Last?

Most cases of food poisoning resolve within a few days, but the exact duration depends on the organism or toxin responsible, the amount consumed, and the affected person’s health. Some illnesses cause symptoms for only several hours, while bacterial or parasitic infections can last a week or longer. Typical symptoms include vomiting, diarrhoea, abdominal pain, nausea, and fever. Severe dehydration or complications may require hospital treatment. If food poisoning may have resulted from contaminated restaurant food, packaged food, or another commercial product, documentation can be important. Keep receipts and packaging where possible and record when and where the food was eaten. Medical testing may help identify the organism responsible. A legal claim generally requires more than becoming ill after a meal; evidence must connect the contaminated food and responsible party to the illness. Severe or persistent symptoms should be medically evaluated promptly.