chidori, this is my 2nd pack this week. Bad hor? I console myself by saying that I didn't have it for past few weeks. And I won't allow myself to eat next week too. Hope that works hehe. My mum just bought me bird's nest, come in small individual glass bottles (smaller than chicken essence bottle size). Seems concentrated (to me lah, I'm not expert). Yesterday I just started taking, but not sure how frequently to take? I didn't consider buying the lo hong kar big bottle kind, cos afraid of contamination if don't finish in one shot. I also ordered dry bird's nest, not in a hurry to eat those, since dry ones can keep for a long time.