Showing all 16 results



Rehmannia Dean Thomas’s Supertonic longevity elixirs and extracts are time tested formulations for radiant health, strengthening life force, increased longevity, enhanced memory, heightened energy and, ultimately maximized health. Rehmannia Dean Thomas’s tonic herbal powdered extracts utilize the most revered herbs of Asia, proven safe and effective over thousands of years’ use. Rehmannia’s tonic herbal formulas also support mental and physical wellness to thrive in today’s hectic world.

More about RDT Herbal Formulas

The majority of Tonic herbs are wild plants, harvested in forests in an ancient tradition by sanctioned collectors. Great care is taken to insure the herbs are gathered sustainably, with minimal damage to the environment. Rehmannia sources his herbal powdered extracts from pristine regions in the northern Manchurian province of China, as well as the Korean countryside. This region is geographically similar to Maine, hosting many protected biospheres which are monitored by the United Nations and the Chinese government. The herbs selected from these wild forests are designated “Di Tao,” meaning they are guaranteed pure, and sustainably collected from the region of their biological origin. We provide lab analysis (COA’s) upon request.

Rehmannia is a Taoist Tonic Herbalist in the Gate of Life lineage, a 5000 year old herbal system from China (est. 2975 BC). His experience with Chinese herbalism began in 1985 during a visit to herb farms in Northeastern China. After returning, he and his then Chinese wife made tonic herbal tinctures in their kitchen. In 1998, Rehmannia met Master Herbalist Ron Teeguarden and became his personal apprentice until 2006. In 2007, Rehmannia created his first business, Shaman Shack, where he formulated ground-breaking tonic elixir formulas including 3 IMMORTALS, MORNING JING, SEA CLEAR, and more. During this time, Rehmannia innovated new developments in the field of Chinese herbalism, introducing pure filler-free 10:1 bulk powdered extracts in straight-sided jars (no maltodextrin, no capsules), and promoted drinking as elixirs.

Rehmannia is a U.C. Master Gardener, focusing on Permaculture. He studied Chinese medical diagnosis at Alhambra University, and obtained a degree from Natural Healing College as “Master Herbalist”, but adheres to the title Master Teeguarden gave him as “Superior herbalist.”

This site uses cookies to offer you a better browsing experience. By browsing this website, you agree to our use of cookies.