My acupuncturist recommended Breath Natural the Chinese herbal medicine Pe Min Kan Wan as a treatment for my suffering of seasonal allergies...the first time I took it within 2 weeks after taking this product I felt the relief from sneezing, runny nose, congestion, etc...now I usually start taking it about a month before the allergy season starts (which where I live is around May) and take it right through the end of the season around end of September...