This formula has some excellent tonic herbs: Tibetan rhodiola, American ginseng and Chinese asparagus. I have had continual problems getting the full breathing; my breathing is shallow and seems to jam above the solar plexus. This formula has nicely opened up my lungs, so I am taking fuller breaths. Despite being specifically for the lungs, it provides a nice mild, slightly cooling, energy tonic. It will be very good for those who find that herbal tonics overheat them.