Hi, no, wasn't me with the lemon rind. But I'll have to try it!
The Chang tinctures I get were her "kit": Curcuma, Chinese Bitters, Gold Coin Grass and Coptis. They are generous-sized bottles. This is the stuff you need for a liver flush, although some people just use the god coin grass. However, some of the other herbs in the other bottles help build up your bile and, as noted before, energize your intestines.
They're a little bitter, some less so than others. Not bad all in all -- especially for what they do!