Sildenafil can eat watermelon, watermelon helps to replenish the body’s water, sildenafil is used for the treatment of erectile dysfunction, the drug is prohibited to take with nitrate at the same time, and cardiovascular risk factors to avoid taking. Sildenafil is generally used to treat erectile dysfunction in men, and it is not recommended to take the drug at the same time if the patient is taking isosorbide mononitrate as well as isosorbide nitrate. However, watermelon generally does not affect the absorption and efficacy of sildenafil, so you can eat watermelon after eating sildenafil. And eating watermelon appropriately can replenish the body’s water, which is beneficial to health. If there are already cardiovascular risk factors should try to avoid sexual activities, if angina, dizziness, nausea and other symptoms appear at the beginning of sexual activities, need to terminate sexual activities. Some patients occasionally experience prolonged erections when using the drug, and if the erection persists for more than four hours, immediate medical attention should be sought. The medication is taken in accordance with the doctor’s instructions, and the occurrence of uncomfortable symptoms in time to consult a doctor.