Medicinal Herbs Herbs are used by some people in an effort to maintain health or to reduce side effects of anticancer therapies. However, it is important to remember, no medicinal herb has been shown to cure cancer. There is also little research completed on medicinal herbs.
Science still has many questions about their effectiveness and long-term safety.
In the United States, medicinal herbs are not regulated by the Food and Drug Administration. This has resulted in a lack of consistency between products. Amount or potency of the herb may not match what is claimed on the label. Some products may also contain ingredients not identified on the label that could be harmful. Stop taking any herbal product immediately if you experience headache, nausea, vomiting, allergies, skin rashes, or upset stomach.