If the headache is mild after taking Sildenafil Citrate Tablets, it may be a mild adverse reaction, usually no special treatment is needed, and the headache will gradually disappear after resting for a period of time. If the headache is serious, stop taking the medicine and go to the hospital as soon as possible. Sildenafil Citrate Tablet belongs to the patients who are used to treat erectile dysfunction of the penis. Some patients may have headache after taking the medicine because of the dilation of blood vessels in the head, resulting in local nerve pulling, which is a common adverse reaction. If the headache is only mild, there is usually no need to deal with it, and the headache symptoms will be gradually relieved. If the headache becomes more and more serious, accompanied by arrhythmia, hypotension and other adverse reactions, patients should stop taking the drug in time and go to the hospital for diagnosis and treatment. It should be noted that before taking the drug, patients need to observe the ingredients in the sildenafil citrate tablets, if the ingredients are allergic to it, it can not be taken. It is recommended that patients take Sildenafil Citrate tablets regularly as prescribed by the doctor, and if the headache is severe after taking the medicine, they should consult a doctor as soon as possible.