Functions: 1) Tonifies the Kidneys yang 2) Dispels wind-dampness and strengthens the sinews and bones Indications: 1) Impotence, male or female infertility, premature ejaculation, urinary frequency, incontinence of urine, irregular menstruation, cold and painful lower abdomen, and a weak and sore back 2) Wind-cold-damp painful obstruction; tight musculature of the lower back and legs; joint pain..