Sildenafil i.e. Sildenafil Citrate tablets are recommended to be taken once in 3 days or more in the fifties, but the dosage time should not be generalized as every person is different. Sildenafil Citrate Tablet is mainly used for the treatment of erectile dysfunction. Usually, it is recommended to be taken once in 3 days for people in their fifties. However, if the body absorbs the medication poorly, resulting in a slower breakdown of its effects, it can also be taken there once in 4 days. After the use of the drug may appear pain, fainting, dysphagia, edema, synovitis, asthma, tinnitus and other adverse reactions, for patients suffering from cardiovascular, resting state hypotension, hypertension and other diseases should be used with caution, women, children, recent cardiovascular state should not be sexually active people, as well as allergic to the product should be prohibited. If you want to know the specific time to take sildenafil citrate tablets, it is recommended to go to a regular hospital to consult a doctor, under the guidance of the doctor to use the drug, it is strictly prohibited to unauthorized use of drugs.