Is there a good way to make the stomach flu shorter in duration?

You must be very. Gentle with your GI tract. Start with clear liquid like water, soda that is clear, or sports hydration drinks. Sip often to prevent dehydration.Work up to solids with bland foods like bananas, rice, applesauce, toast, gelatin, or chicken. Avoid alcohol, nicotine, caffeine, dairy & high fat foods. Rest. Some stomach virus infections have a longer duration than others.