Grape fruit seed extract is the very best for a stomach ache' 5 to 6 drops in a cup of water. It works also if you swallowed some bad water while swimming or drank some bad water while traveling in a different country. It has a very bitter taste. helps kill the germs and bugs.My child after throwing up and trying many different things was able to go to sleep and rest without pain. It has worked even for my friends!!