Chinese Medicine is the longest continually practiced medicine and Chinese herbal medicine can be traced back at least over 5,000 years old. Over the centuries, practitioners have developed formulas and strategies for treating the whole person- the underlying cause of disease and pain. This is different from the Western herbalism which treats just the diseases or symptoms.
Unlike pharmaceuticals, there are few if any side effects from herbal formulas.
I only use herbs and herbal formulas from companies utilize third party testing for safety and contamination. The herbs are tested to ensure that they are free from pesticides, arsenic sulfur, chlorine, and aluminum phosphate and any other possible contaminant. When possible, I use organic herbs.