I don't use them. I had an excellent Oriental Medicine doctor who was also an acupuncturist. Unfortunately, she and her husband returned to his family home in Asia.
But, she told me to avoid most multi-ingredient herbal medicines because I have allergies. Under her supervision I tried a couple, and had reactions to both.

I'm going to add one more caveat - I always encourage buying supplements whose labs submit to outside review. My acupuncturist was concerned that many of the herbs used in Oriental medicine in the US come from unknown sources overseas, even those that may be mixed in the US. She was concerned about purity, and even whether the advertised herbs were indeed included. Please note that there is no indication, on the labels or the web sites, that these supplements have been submitted for any independent testing. In my experience, this is typical of Oriental herbal preparations. So I would only buy from a practitioner I trust, one who vets their sources.

As for me, I am sticking to my Mucinex & NAC taken with lots of water, with a side of Breathe Easy herbal tea.
Sue