Vomiting usually lasts less than one day.
Diarrhea can last up to a week. The main goal of treatment of both symptoms is to prevent dehydration. The primary treatment of both diarrhea and vomiting is dietary changes. For vomiting, the most important treatment is clear liquids. In infants this means an oral rehydration fluid such as Pedialyte or Infalyte , unless your baby is breast feeding.