This episode covers another amazing Chinese herbal formula and will go into great depth about it. This time it is Gui Zhi Tang’s (Cinnamon Twig Decoction) turn. Besides covering the basics of the formula including category, and functions of both the formula and the individual herbs in the formula, we will explore the history, science, pharmacology, evidence, and any potential interactions of each formula. And then there is always something a little quirky about an episode. This episode will cover some important theory, specifically ying or nutritive and wei or defensive qi, necessary for understanding the functions of Gui Zhi Tang!