Viagra is the trade name, generic name is sildenafil citrate tablets, and alcohol is generally not recommended while taking it, nor in daily life. Sildenafil citrate tablets are commonly used in clinical practice for the treatment of erectile dysfunction in men, and should be contraindicated in patients who are allergic to any of the components of the product, currently taking guanylate cyclase agonists (e.g., leucovorin), and during the period of regular or intermittent administration of carbon monoxide donors. Although the drug insert of Sildenafil Citrate Tablets does not clearly identify the need to abstain from drinking alcohol after using the drug, in reality it is generally recommended to abstain from drinking alcohol either after taking the drug or in daily life, mainly in view of the fact that long-term consumption of alcohol can cause harm to the body. In addition, adverse reactions such as back pain, nasal congestion, headache, dyspepsia, hot flashes, myalgia, vision abnormalities, rash, nausea, dizziness and so on may occur after the use of the drug. Specific use regarding Sildenafil Citrate Tablets should be under the guidance of a specialist.