I’ve been drinking this tea since college. It may be the placebo effect, but it seems to help my mood. It doesn’t taste bad either, kind of an herbal version of a typical green tea. It does contain caffeine from the green tea it is mixed with.
A note of caution to those on hormonal birth control: I’ve heard St. John’s Wort can reduce the effectiveness. Do I have science to back any of this up? No! Is this a good tea? Yes!