Other People Are Reading How to Recover From Food Poisoning How to Deal With Bouts of Food Poisoning Overview Jupiterimages/Polka Dot/Getty Images Time Line for Food PoisoningHow long food poisoning takes to set in depends on the type of food poisoning. Generally, symptoms can set in within two to six hours after food has been consumed. But sometimes symptoms can appear within a few days or a few minutes. Illnesses caused by food poisoning can last up to 10 days. Some food poisonings can be ...