A Toxic Remedy - Important Information on Helenalin and the Side Effects of Arnica Montana5/26/2017 I was taught originally that Arnica, or A. montana, is not particularly safe to eat. After my researching the most recent medical studies on PubMed, I now have a different opinion. Is Arnica toxic? The health benefits of A. montana are derived from sesquiterpene lactones, a class of chemical compounds commonly found in many plants throughout the world. Our research into the potential effects of Arnica montana introduced us to the chemical Helenalin. What Is Helenalin? |