What should you know about food poisoning 24 hours later?

A day is not a reliable point at which every foodborne illness ends. Ongoing diarrhoea, nausea, vomiting, cramps or fever can reflect continued irritation of the gut and loss of fluid. Symptoms may be improving even when stools have not returned to normal. A new or worsening pattern deserves a fresh assessment rather than an assumption that it is harmless.

Consider whether you can drink, pass urine and stay alert. The answer to those questions gives more useful information about immediate risk than the clock alone. Food Poisoning and Fever provide related background.

Continue small, frequent drinks; use an oral rehydration solution when diarrhoea or vomiting is significant. Try simple foods as tolerated and rest. Avoid alcohol, strenuous activity and food preparation for others while symptoms continue. Keep a brief record of fluid intake, urine, stool changes, vomiting and temperature.

Contact a clinician if there is no clear improvement, if symptoms interfere with drinking, or if you have a condition or medicine that makes dehydration more concerning. Do not start antibiotics from an old prescription.

Urgent assessment is appropriate for blood in stool, severe abdominal pain, repeated vomiting, faintness, confusion, very little urine or a worsening fever. Emergency help is needed for collapse, severe weakness or breathing difficulty. Children, older adults and pregnant people should receive advice sooner when fluid loss is continuing.

Is my recovery pattern expected for the suspected cause? Do I need examination or stool testing? Which drinks and foods should I use now? What change would mean I should attend urgent care?