Viagra is generally referred to as sildenafil, generally speaking, you can take valsartan and then take sildenafil, there is no contraindication to pairing, but it is best to take it in accordance with medical advice. Valsartan is a hypertensive drug, which can selectively block the binding of Ang II and AT1 receptor thus inhibiting vasoconstriction and aldosterone release, producing antihypertensive effect. However, it is not suitable for people with allergies to take the drug, and it is also accompanied by certain headache, dizziness, cough, and low blood pressure adverse effects. According to current research, there are no adverse drug interactions between valsartan and sildenafil. Sildenafil is a cyclic guanosine monophosphate-specific phosphodiesterase type 5 inhibitor and is used to treat erectile dysfunction and pulmonary hypertension. When treating erectile dysfunction, it enhances the effect of activating smooth muscle relaxation in the cavernous body of the penis, dilation of the cavernous sinus, and blood inflow to produce an erection. However, it may trigger cardiovascular adverse effects such as transient local ischemic shock and hypertension. Although there is no pharmacologic mechanism conflict between valsartan and sildenafil. However, in view of the possibility of superimposed adverse effects, it is recommended to take them under medical supervision. Whether it is hypertension or erectile dysfunction, you need to seek medical attention and follow the doctor’s instructions, do not use your own medication.