Herbs
A materia medica for study. No shop, no doses. Every entry says not to self-dose.
4 herbs
Du Zhong杜仲
Eucommia bark
Warms and supports the low back and the kidneys in textbook language.
Gui Zhi桂枝
Cinnamon twig
Warms the channels and helps a mild surface pattern.
Rou Gui肉桂
Cinnamon bark
Hot bark that returns fire to the source, in the classical phrase.
Yin Yang Huo淫羊藿
Epimedium
The kidney-yang herb students meet when textbooks discuss erectile difficulty.