Posted by iHerb Customer on Mar 24, 2007 | Verified Purchase
I first saw mention of andrographis in an article debunking echinacea/goldenseal as an immune system booster. I read a few more articles and, since I was able to find the product for such a low price at iherb, I decided to give it a try. I've been using it for two winters now, and have not had a cold. And I teach school, am over 50, and smoke!