I gotta say back when I was managing the health food store, in the end just about the only things I would recommend were either garden of life or new chapter. The new chapter mushrooms are especially good, they say it's all about getting mushrooms which have the closest ancestry to the original one in its line. So they have some system where they say their P-Value organic mushrooms are on a different level. I do know I've felt good using them in the past. Their throat spray which was very good preventing colds. I also liked the Cordyceps & Liver Force Mushroom combo.