I am familiar with the liquid as my older child went on it
for two months because he was getting
cold sores constantly. It worked, he rarely gets them, maybe one small one since then. their md does not want to start my younger one yet because of his age and potential side effects to the liver etc.. It seems that peanut butter, which he eats constantly causes him to break out with them. In my constant research it appears this is true due to the lysine vs arginine.