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.
Flu viruses can also survive as droplets in the air for several hours; low temperatures increase their survival in the air. Parainfluenza virus, which causes croup in children, can survive for up to 10 hours on hard surfaces and up to four hours on soft surfaces. Stomach bugs. There are many germs that can cause a stomach bug.