I bought this herbal tea from Kowloon City last night. The store had $18/bag of 15 tea bags and $5/bag for 4 tea bags. I didn't find 薄荷葉味, I bought green tea 味 and 原味 at $5/bag to try first.
I had green tea last night around 10PM, I had 便便 this morning around 8AM. As you said 十個鐘後要上廁所, it was pretty on time so you can estimate and not to be embarrassed if you are not home. I had 肚痛 but not as terrible as 保X麗. I also like the taste of green tea
ptptmama, how do you drink it ? 1 tea bag everyday or 1 tea bag after each meal ?