If you believe you are suffering from food poisoning, avoid solid foods, milk products, and caffeinated beverages.  Drink plenty of fluids to keep hydrated.

More Info: Typical food poisoning cases involve vomiting and diarrhea so your main objective is to stay hydrated.  While you are in the throes of vomiting and diarrhea, you should avoid solid food, which likely will not stay down.  Don't drink milk or milk products as dairy can exacerbate diarrhea.  Drink plenty of fluids to replace those lost.  Get plenty of electrolytes, especially important for children, such as the electrolyte beverages sold at drugstores or a sports drink with electrolytes.

Signs of Dehydration

Dehydration can be dangerous and even fatal.  Food poisoning that includes vomiting and diarrhea can quickly lead to dehydration if the fluids lost are not replaced.  You may be experiencing dehydration if you feel light-headed and dizzy, have no tears when crying, experience dry sticky mouth, don't need to urinate, or are very lethargic.  If you think you are dehydrated and unable to keep fluids down contact your health care provider. You may need to get your fluids intravenously.

Symptoms of Food Poisoning

There are many different symptoms of food poisoning depending on the type of bacteria or toxin you have ingested.  Typical symptoms include nausea, vomiting, diarrhea, abdominal cramping, and headache.  More severe symptoms can include fever, muscle aches, dizziness, and light-headedness.