Food Poisoning: UK Online Doctor Guide
Educational information — not medical advice.
This article was prepared by the OnlineDoctor24 editorial team and reviewed for factual accuracy against UK clinical guidance (NHS and NICE). It is not written by a doctor and does not replace personal medical advice. For symptoms specific to you, book an online doctor consultation.
Key points
- Most food poisoning resolves in 2–5 days with hydration.
- Common causes: Campylobacter, Salmonella, E. coli, norovirus.
- Antibiotics rarely needed.
- Stay off work for 48 hours after symptoms stop.
- Stool sample needed for severe or prolonged symptoms, or after foreign travel.
Symptoms
- Nausea, vomiting
- Watery or bloody diarrhoea
- Cramping
- Fever
- Dehydration risk
Self-care
- Sip fluids constantly.
- Oral rehydration sachets if losing lots.
- Plain food when able.
- Avoid food preparation for others.
- Stay off work 48 h after symptoms settle.
Red flags — when to seek urgent help
Call 999 or go to A&E if you experience any of the following:
- Bloody diarrhoea
- High fever
- Severe dehydration
- Persistent vomiting
- Recent travel to high-risk areas
- Symptoms in pregnancy or immunosuppressed
Frequently asked questions
Common questions UK patients ask about food poisoning.
How an online doctor can help
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This article is for general information only and does not replace personal medical advice from a qualified doctor. Content is reviewed against UK NHS and NICE guidance by the OnlineDoctor24 editorial team and is not authored by a medical doctor. If your symptoms worsen or you are unsure, please book a consultation with a GMC-registered GP.
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