My name is Vinh Tran. Sunnyvale , CA 10-08-2012 I had Bitter taste in the morning when I woke up, And my stomach feel cold And feeling fullness , After Dr Portia Zheng diagnosis and prescribed gave me 5 bags of herbals , I fished In 1 week , and now my tongue did not feel cold any more and the bitter taste went away , My Stomach feel very comfortable and I feel very good appetite , I want to thanks Dr Portia Zheng helping me.