Usage of houttuynia cordata thunb. in preparation of oral preparation for preventing and treating prostatic hyperplasia

The invention relates to usage of houttuynia cordata thunb. in preparation of an oral preparation for preventing and treating prostatic hyperplasia, and belongs to the field of medicine. The usage ofthe houttuynia cordata thunb. is used for solving the technical problem that most of existing prostatic hyperplasia treating drugs have the obvious toxic and side effects and are not conducive to long-term administration. According to the technical scheme for solving the problem, the usage of the houttuynia cordata thunb. or flavone extracts thereof serving as an only active ingredient in preparation of the oral preparation for preventing and treating prostatic hyperplasia. Through experimental results, it is showed that the houttuynia cordata thunb. or the flavone extracts thereof are used for treating prostatic hyperplasia, thus the advantages of being safe, free of side effects, quick in taking effect, and definite and stable in curative effect are achieved, and the life quality of prostatic hyperplasia patient