A reputable acupuncture physician prescribes traditional Chinese herbs that
have been tested over thousands of years. If they don't buy their herbs directly from the grower (or grow them themselves!), they know which brands are produced according to GMP. Acupuncture physicians trained at quality US schools are also educated in north/western medical principles so that they can coordinate their efforts with practitioners of north/western medicine. I'm pretty sure, but not 100%, that the same is true with Chinese-educated doctors.
Historically, for reasons that have much to do with misogyny, European and North American industrialized medicine suppressed traditional medicine to the lasting detriment of
both. The same is not true of Chinese medicine where techniques and understandings are viewed as complementary and not distinct, and a unified system of medicine has been allowed to evolve.
Leaf through a PDR some time and observe what percentage of FDA-approved drugs carry the notation "mechanism of action is unknown," including most popular psychotropics. Then come back and talk about how herbs don't work because north/western doctors don't understand how.
My acupuncture doctor retired from a long career as an environmental engineer and spent two years in medical school before transferring to acupuncture college because he didn't want to be a pill-pusher (his words). It's not like he's lacking in "scientific" background.
I think there can be a lot of potential problems when Chinese herbs are used by people with a north/western understanding of medication - i.e., throw things at the illness until something sticks. TCM has much more to do with treating the person, not the condition, and so even more than with psychopharmaceuticals, it's important that Chinese herbs be prescribed by a trained provider.