Cistanches, wolfberries and lockjaw are all commonly used Chinese herbs that have the effect of tonifying the kidneys. Cistanches and lockjaw can nourish kidney yin, kidney yang and kidney qi, which are inclined to nourish the kidney, while Cistanches also has the effect of laxative. And Chinese wolfberry is inclined to nourish the yin of the liver and kidney, so the effect of Cistanches, Chinese wolfberries and locking yang will be enhanced when used together. Generally people can use Cistanches, Wolfberry and Lock-Yang together to treat decreased libido, lumbar and knee weakness or constipation, which is very effective in improving human sexual function.