I have been using coptis and Chinese bitters. I am now ready to start the Core Protocol as well. Will there be a problem with combining these herbs? Thanks.
You can take the protocol with other herbal formulations. The only thing is to check the side effects for each and compare to the herbs in the protocol so as to minimize blended side effects.
I am not sure why you are taking coptis for lyme as it is very similar to goldenseal and is mostly a gastrointestinal antibacterial / antifungal herb. From your use of Chinese bitters as well I am assuming that you are working on some intestinal problem.
With the Core Protocol, you should just make sure that the Core Protocol herbs do not exacerbate any current problem in the GI tract. Otherwise, the herbs will work together fine.