Viagra is the trade name and generic name for Sildenafil Citrate Tablets, and while it is possible to take Sildenafil Citrate Tablets without having sex, it is generally not therapeutic and may also have adverse effects. Therefore, it is not recommended that people who are not sexually active take the drug Sildenafil citrate tablets can generally be taken when there is no sex life, however, the drug needs sexual stimulation to be effective, if the patient takes the drug without sex, it can not play a role in treating the disease. It may also lead to adverse reactions, such as headache, flushing, dizziness, nasal congestion, indigestion, visual abnormalities and other adverse reactions. In general, patients are advised to take the drug about 1 hour before having sex. It should also be noted that the drug is forbidden to be combined with nitrate drugs, and it is contraindicated for women, people who are allergic to the product, children, and people whose recent cardiovascular state is not suitable for sexual intercourse. The drug should be taken in accordance with the doctor’s instructions, and should not be taken on its own.