The FDA has alerted health care professionals to important safety information about botanical products containing aristolochic acid, which are used as ingredients in dietary supplements or sold as "traditional medicines."
A year ago, the agency informed health care professionals that consumption of products with aristolochic acid resulted in several life-threatening adverse events and urged manufacturers and distributors of dietary supplements to ensure that their products are free of this harmful ingredient.
Schwetz BA. Safety of Aristolochic Acid. JAMA. 2001;285(21):2705. doi:10.1001/jama.285.21.2705