Viagra is the common name for sildenafil citrate, and since sildenafil citrate has the ability to enhance the antihypertensive effect of nifedipine tablets, it is not acceptable for patients to take nifedipine tablets even if the two are taken separately. Nifedipine Tablet is a calcium channel blocker, which is used for the treatment of angina pectoris and hypertension, and may cause adverse reactions such as peripheral edema, transient hypotension, and syncope. It should not be taken concurrently with sildenafil sodium citrate. It is contraindicated in patients with heart disease, those taking rifampicin, pregnant women, and those who are allergic to the product. Sildenafil citrate is used to lower blood pressure or treat erectile dysfunction and can have side effects such as facial edema, fatigue, angina, and hypotension. For those taking two antihypertensive medications at the same time, it can cause vasodilation in the body circulation, resulting in severe hypotension. It should be contraindicated in patients requiring any dosage form of nitrate and in those with known hypersensitivity to the ingredients. Sildenafil sodium citrate has the effect of enhancing the efficacy for nitrate drugs, both belong to the same antihypertensive drugs, whether taken at the same time or separately, will cause the patient’s blood pressure to plummet, or even death. Therefore, nifedipine tablets and sodium sildenafil citrate can not be taken even if they are taken separately. Nifedipine tablets and sodium citrate sildenafil can not be taken separately, it is recommended that patients go to the hospital, consult the doctor in detail, under the guidance of the doctor to standardize the use of medication, do not use on their own.