I listened to and took notes on a recording of Tommie Bass. He said the following, and it capture exactly how I feel about herbal medicine.
"If I went into telling you every medical value of every plant and herb, there wouldn't be a [video] tape long enough to hold all the good values of the herbs God gave us to heal us and keep us healthy." Tommie Bass 1908-1996 He is worth researching and so is Aunt Molly Kirby, the medicine woman who started his education.