The duration of stomach flu, medically known as viral gastroenteritis, can vary depending on several factors, including the specific virus causing the illness, individual immune response, and overall health. In general, how long does stomach flu last anywhere from one to three days, with most cases resolving within a week.

Common symptoms of stomach flu include nausea, vomiting, diarrhea, abdominal cramps, fever, and fatigue. These symptoms can be uncomfortable and disruptive but are usually self-limiting and improve over time as the body fights off the infection.

While most cases of stomach flu resolve on their own without medical treatment, it's essential to stay hydrated and rest to help support recovery. Drinking clear fluids such as water, electrolyte solutions, or broth can help replace lost fluids and prevent dehydration.

In some cases, particularly in young children, older adults, or individuals with weakened immune systems, stomach flu symptoms may persist or become more severe. If symptoms worsen or persist for more than a week, or if there are concerns about dehydration or other complications, it's important to seek medical attention promptly.

Overall, practicing good hygiene, such as frequent handwashing, and avoiding close contact with sick individuals can help prevent the spread of stomach flu viruses and reduce the risk of infection.