Viagra, generally referred to as sildenafil, is not recommended to be continued if it is taken every day for a period of 5 years; however, it can be continued if the medication was taken as prescribed by a doctor during those 5 years. Sildenafil treats erectile dysfunction in men. Taking the medication appropriately can be therapeutic, but if it is taken too often, it may cause adverse reactions. Prolonged use of sildenafil may lead to lower blood pressure, dizziness, stuffy or runny nose, abnormal erection, headache, nausea, dizziness, blurred eyesight and vision, cardiovascular disorders, back pain, muscle pain, and skin rashes. Therefore, if the drug is taken every day for a period of 5 years then it is recommended not to continue taking it as it may lead to physical damage. However, if it is applied in accordance with the doctor’s instructions, it usually does not cause serious adverse reactions, and at this time you can continue to take the drug. The drug is prohibited in combination with nitrate drugs, it is forbidden for women, people who are allergic to the product, children, people whose recent cardiovascular state is not suitable for sexual life. Patients taking sildenafil tablets should consult a doctor before using the drug, and take it under his guidance, do not take it blindly on your own.