Preparation of walnut shell extract and applications thereof in preparations of cardiotonic medicine and cardio-cerebrovascular medicine

The invention discloses a preparation method for extracting ethanol from an extract of a natural walnut shell, a pharmaceutical composition using the extract as the active component and research results of relevant pharmacology. A walnut shell is ground and boiled for extracting the ethanol and then is concentrated and dried for obtaining the brown red extract. The extracting method is characterized by short process, relatively high extracting rate and is easy for industrialized production. The discovery of the medical value of the walnut shell and the development of the product can prevent great waste of natural pharmaceutical resources. The research of the pharmacological activity shows that the walnut shell extract has a certain activity for strengthening heart and improving myocardial blood supply and is possible to be developed into a new pharmaceutical of natural traditional Chinese medicine for curing cardio-cerebrovascular disease, having a plurality of pharmacological activities, low toxicity and high efficiency. Various oral preparations of different pharmaceutical compositions can be prepared by mixing the extract of effective curing amount with pharmaceutical adjuvant.