Yin Yang Huo Granules (20:1)

Epimedium tonifies the Kidneys and fortifies the yang;Dispels wind-cold-dampness and warms and unblocks the flow of yang qi.

"The sweet warmth of Epimedii Herba (yin yang huo) tonifies the fire at the gate of vitality and fortifies the Kidney yang, while its acrid warmth expels wind-dampness. Tonification of of the Kidney yang enables it to treat impotence, spermatorrhea, and urinary frequency. Internally, reinforcement of the Kidney yang strengthens the bones, while externally, wind-dampness is dispersed so that painful obstruction is unblocked. Thus, only only are these pathogens expelled, but the injury done by them is repaired." (Chinese Herbal Medicine Materia Medica, 3rd ed)*