I am reading through Wilford Woodruff's diary for the time he spent in St. George in the late 1870s, and see the following note:
I thought I was poisond to death to day with a tea made of Indian root which was recommended good for my lungs. After swallowing 3 tea spoonfulls I turned deadly sick for two hours. I felt as though I would die. I drank sweet oil, No 6, and Cayenne pepper tea which finally eased my distress. There was quite a Change Came over my whole system in the Evening. I rested well through the night. Br George Jarvis watched with me for several nights.
Kenney, Scott, ed., Wilford Woodruff's Journal: 1833-1893 Typescript, Vol. 7: 1 January 1871 to 31 December 1880, (Midvale, UT: Signature Books, 1985), 350.