SIDE EFFECTS: Dry lips and mouth, minor swelling of the eyelids or lips, crusty skin, nosebleeds, upset stomach, or thinning of hair may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Duration of stomach flu depends on the severity of the attack. The condition may become worse in case of infants, young children and elderly who cannot drink sufficient fluids to compensate for dehydration experienced during the illness. For these people, stomach flu can last for 3 weeks or more.
So how how long does stomach flu last in adults? Anywhere from 24 hours to 10 days, but more commonly on the lower end of that spectrum. Knowing how to get rid of the stomach flu typically doesnât require any medication or much intervention, but more on that later. But wait â how can you tell if you have the stomach flu vs. food poisoning?