Drinking alcohol after taking sildenafil tablets may cause a drop in blood pressure and can be taxing on the liver. Drinking alcohol after taking sildenafil tablets is not recommended because sildenafil dilates blood vessels and alcohol also dilates blood vessels. Drinking alcohol after taking sildenafil tablets will cause the effects of the two to superimpose, causing a drop in blood pressure and causing dizziness and facial flushing to occur in the user of the drug. In addition, because sildenafil and alcohol are both metabolized by the liver, the simultaneous use of the two will also increase the burden on the liver. Sildenafil tablets are mainly used for the treatment of erectile dysfunction, when using the drug, headache, flushing, dyspepsia and other adverse reactions may occur, people who are allergic to any components of the product, taking nitric oxide donors should be prohibited from using this product, in addition, this product is prohibited from combining with guanylate cyclase agonists (such as leucovorin). If there is a need for medication, it is recommended to use it in strict accordance with the doctor’s instructions, avoid blind use of the drug or change the dose, and after the use of the drug, avoid drinking alcohol, so as not to cause discomfort.