Food poisoning is a horrid experience, but the only thing you can really do while you ride it out is find ways to help your body flush out your system, and replace the salts and water it loses. Dehydration is the most serious complication of food poisoning, especially for those considered vulnerable, i.e. the very young and old, or those with underlying conditions.
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It is therefore important to stay hydrated, even though it may feel like drinking is the absolute last thing you want to do. It is important to try and take small but frequent sips of water, if a large drink is not something you can tolerate. Avoid fruit juice or fizzy drinks, as they can make diarrhoea worse.5
Try ice and even very diluted squash if you are struggling to drink water. As well as keeping hydrated, the NHS advises that you stay home and rest. Some people may say that you should eat or avoid specific foods, but the current advice is to eat when, and what you feel able to. No need to seek out something “gentle on the stomach”. Hydration is the most important advice to aid your recovery.