Polycinnamyl alcohol injection can be used for the treatment of internal hemorrhoids, polycinnamyl alcohol injection is a sclerosing agent, can make the internal hemorrhoids harden and shrink to stop bleeding. Polycinnamyl alcohol injection is a sclerosing agent can be injected to make the varicose veins near the location of fibrosis, the location of the varicose veins to pressure, to achieve the purpose of hemostasis, is the clinical treatment of internal hemorrhoids in a better way, in addition to the sclerosing agent there is anti-hemorrhoidal spirit injection, or surgical treatment, and so on. Adverse reactions of Polyguillin injection are less, can temporarily appear chest pain, reduced cardiac function, dysphagia, constipation, dizziness, visual impairment and so on. It should be contraindicated in people who are allergic to the product or in a state of shock. In the presence of acute severe heart disease, endocarditis, myocarditis, increased hypertension, sclerotherapy should be carried out after stabilization. The use of specific drugs needs to be carried out under the guidance of a professional doctor, do not judge the use of drugs on your own.