Food Poisoning There are many types of food poisoning, most of them not particularly serious. Symptoms begin 3 to 36 hours after ingesting tainted food, and run their course in about two days leaving the person healthy again. Sip clear fluids.
Dehydration is the most serious consequence to avoid.
Take small amounts of liquid frequently. If you can't keep that down, suck on chips of ice. After vomiting stops, start eating food, slowly. Avoid sun tanning. It may aggravate the dehydration.