Most cases stop on their own. A possible effect of diarrhea or vomiting is the excessive loss of body water, or dehydration. The highest risk is for children and the elderly. Drink lots of clear fluids. Avoid eating solid foods until diarrhea and vomiting have stopped.
Bed rest is usually helpful.
Do not use products that treat diarrhea unless your healthcare provider recommends them. Wash your hands before meals, after using bathrooms, and after changing diapers. Refrigerate foods that can spoil. Cook meat thoroughly and wash cutting boards with hot water and antibacterial soap. Use paper towels rather than sponges for cleanup.