Sinew Extract is used for joint pain, flexion and extension; Epimedium is used for treating kidney yang deficiency, impotence and spermatorrhea, impotence and weakness of muscles and bones, rheumatism and paralysis, numbness and contracture. 1. Sinew Extension Herb is slightly bitter, pungent and warm in nature, belonging to the liver, spleen and kidney meridians, with the efficacy of dispelling wind and removing dampness (dispelling wind and dampness in the body), relaxing tendons and activating collaterals (stretching the tendons and bones and dredging the meridians and collaterals), and is used in the treatment of aching and pain in joints and unfavorable flexion and extension. Pregnant women and those with excessive bleeding should not take it. 2. Epimedium is pungent, sweet and warm, belonging to the liver and kidney meridians, with the effect of tonifying kidney yang, strengthening tendons and bones, and dispelling wind-dampness. It is used for treating kidney yang deficiency (deficiency of yang qi in kidneys), impotence and spermatorrhea, impotence of tendons and bones, rheumatism and paralysis, and numbness and constriction. It should be used with caution for those who suffer from yin deficiency and fire (deficiency of yin essence in the body, resulting in hyperactivity of deficiency fire). If you feel unwell, please use it under doctor’s guidance, do not take it blindly by yourself.