Chinese patent medicines are generally used for single mild chronic diseases, with relatively small toxic and side effects and convenient taking, carrying and storage.

patients who are afraid of trouble or western doctors who are not proficient in traditional Chinese medicine like to prescribe proprietary Chinese medicines. If the prescribed proprietary Chinese medicines are super expensive, it will be driven by interests, and they will get a lot of kickbacks. In fact, the medicines may not suit the symptoms.

Traditional Chinese medicine practitioners who really understand syndrome differentiation will generally prescribe decoction, because the decoction that suits the symptoms is much faster.

As for what you said, you have skin diseases, and you have eaten a lot of proprietary Chinese medicines, and your liver is bad, so you have met a quack.