An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government
organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to
the .gov website. Share sensitive information only on official,
secure websites.
... is reported to contain four herbs: burdock root ( Arctiumlappa L.), Indian rhubarb root ( Rheum palmatum L., ... the herbs used in both mixtures, burdock root ( Arctiumlappa L.) contains several flavonoids and polyphenols that ...