An investigation by Consumer Reports identified 12 herbal supplements that could cause serious health risks, and even death, 10News reported.
The potentially dangerous effects of most of the products have been known for a decade, yet they still are being sold, according to the magazine.
Among them are androstene, a popular sports-enhancing supplement now banned by athletics associations. Consumer Reports said it can increase cancer risk and lower HDL cholesterol.
The investigation also found another popular supplement, kava, can cause severe liver problems, even death.
The other 10 herbal supplements are:
Snakeweed or snake root
Extracts from brain or adrenal glands