Teasel provides warming energy to the kidneys (adrenals) in the form of a warming essence yang tonic. Tierra provides the following description:
Teasel is a warming tonic. Tonics that warm a person up increase the general physical energy as well as the energy of the spine and brain. They strengthen the sexual power, the blood and bones and stabilize the joints.
They provide the energy of courage, fortitude and will power. The warming essence tonics increase the adaptive energy of the body and enhance internal defense mechanisms.
They also regulate the function of the adrenal cortex, regulate energy metabolism, promote sexual functions, and strengthen resistance.
The warming essence tonics can also be used to tone up the heart, circulation and digestion.