- Burdock root has been used in traditional Chinese medicine, along with plants, as a cure for colds and a source of vitamins. Although some modern doctors recommend it for treating cancer, its efficacy and safety for cancer is not known, according to the National Institute of Health.
- Burdock root is considered safe for human consumption. It is a powerful diuretic, but too much use can result in excessive urination.
- Some people are allergic to burdock root, according to the NIH. People with allergies to ragweed, daisies and marigolds should take care with burdock. Although most allergies manifest a mild skin rash, severe reactions have been associated with burdock.
- According to the NIH, there have been reports of burdock tea being toxic, but there has been no conclusive confirmation.
- Burdock can raise and lower blood-sugar levels, and anyone with diabetes should consult a doctor before taking it.
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