Skip to main content
U.S. flag

An official website of the United States government

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.

Search help
1 results
  1. Essiac/Flor Essence (PDQ®) - PDQ Cancer Information Summaries - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK66061
    ... herbs: watercress ( Nasturtium officinale R.Br.), blessed thistle ( Cnicus benedictus L.), red clover ( Trifolium pratense L.), and kelp ( Laminaria ... has shown cytotoxic and antitumor activities; blessed thistle ( Cnicus benedictus L.) contains cnicin , which is a sesquiterpene lactone that ...