Has my 2-year-old son been having very loose stools since his stomach flu?

If your child has loose stools after a bout of gastro, there might not be a need to worry as long as they are not watery. You should notice a gradual improvement in their condition each day. If your child is eating and drinking well and is generally in good health, simply monitoring their progress should be sufficient. In terms of medication, there may not be anything specifically beneficial for them. Instead, try feeding them light foods such as soups, broths, toast with butter, eggs, etc. Avoid heavy or sugary foods like red meat and undiluted fruit juices. This dietary adjustment for 5 to 7 days can give their digestive system a much-needed break.