About the Author

REHMANNIA DEAN THOMAS is an initiate of the earliest official system of plant-based therapy in human history, now known as the Gate of Life lineage of tonic herbalism. He received an eight-year training as personal apprentice to master herbalist Ron Teeguarden, first attaining the status of teamaster, eventually working with Teeguarden at Dragonherbs in Santa Monica, CA, as head alchemist at the elixir bar. Thomas holds a Master Herbalist degree from Natural Healing College, studied TCM diagnosis at Alhambra Medical University, is a UC Master Gardener, and founded Shaman Shack Herbs in 2006. He also created the first online course on tonic herbology. Thomas is currently designing tonic herbal elixir products for various companies.