Tradition and inertia have a lot to do with ineffective and even dangerous remedies being used over the generations. Traditional Chinese herbal medicine is not immune to this phenomenon. As this site (which contains some information suggesting that Chinese herbal medicine might be useful in certain circumstances) notes, systematic study of efficacy and side effects was not undertaken in pre-modern China; failures and fatal reactions could be missed or attributed to other causes (if people are dying off en masse in a famine, for example, you might not notice that their traditional herbal meds were killing off their liver or kidney function). And the problem with Chinese herbal mixtures available in this country today is that you may get mislabeled harmful ingredients as part of a complex mixture (including Aristolochia, which was given to people at a European weight loss clinic, resulting in kidney failure and pre-cancerous changes requiring kidney transplants).
*"…Chinese herbal medicine traditionally uses treatments that are now recognized as dangerous, such as mercury, arsenic, lead, licorice, and Aristolochia. Mercury, arsenic, and lead accumulate slowly in the body, and for many years their harm can only be detected by lab tests.
Licorice (used in many herb formulas to �harmonize� the ingredients) can raise blood pressure and disturb blood chemistry.33,34 These effects were presumably undetectable to traditional practitioners unless they became quite severe.
…Finally, there are many incidents in which use of Chinese herbs appears to have caused liver injury, such as acute hepatitis, chronic hepatitis, hepatic fibrosis, and acute liver failure.44 Ancient herbal practitioners might not have been able to distinguish these herb-induced illnesses from the effects of infectious hepatitis, a widely prevalent condition, and thereby failed to make the connection.
Another set of potential problems arises from the fact that Chinese herbal medicine does not restrict itself to plant products with subtle effects. Many traditional Chinese herbal remedies are, simply put, poisons. When taken in proper doses, they may be safe for use, but dosage miscalculation or use in a particularly susceptible person may lead to serious consequences, including death. For example, in Hong Kong poisoning caused by the herb aconite (used in numerous Chinese herbal formulas) was sufficiently widespread that public health authorities felt it necessary to launch an information campaign to combat the problem.45
Besides toxicity caused by Chinese herbs, other problems have been caused by adulteration of herbal products with unlisted ingredients.36 For example, the Chinese herbal formula PC-SPES, used for prostate cancer, turned out to contain three pharmaceutical drugs�diethylstilbestrol (DES), warfarin (Coumadin), and indomethacin. This appears to have been an intentional adulteration designed somewhat along the lines of a traditional Chinese formula, with one pharmaceutical adulterant that treated prostate cancer balanced by two others to offset the side effects of the first. Unfortunately, the combination is dangerous and has caused at least one case of severe bleeding.37
In another episode, 8 out of 11 Chinese herbal creams sold in the United Kingdom for the treatment of eczema were found to contain strong pharmaceutical steroids.38
Herbal products approved by the Japanese government have undergone meaningful safety testing and are very unlikely to contain known toxins or unlisted drugs. However, this does not mean they are completely safe. For example, several case reports suggest that therapy for chronic hepatitis combining an approved herbal formula with the standard drug interferon can cause severe inflammation of the lungs.39�43
The bottom line: TCHM is a potentially dangerous form of treatment that should only be used under the supervision of a physician."*
As for homeopathy and some other “alternative” treatments, I think one can go only so far with under the banner of “unproven” until one must conclude that one is dealing with quackery.