yes…there are no side effects unless in the rare case that you are allergic to astragalus…in which case a rash is possible.
don’t take it with a virus or you will drive the virus deeper…don’t do it after surgery or while menstruating.
other than that…its the best thing.
especially with iron body training.
if you do chi excersices, you will notice taking only one in the morning and one in the evening…for hard contact training, three before and three after..
it makes every chi kung day a productive one and shens you up.