Viagra generic name is sildenafil citrate tablets, after taking high blood pressure medication usually need an interval of about 24 hours before taking sildenafil citrate tablets, if you have to take it, you need to consult a professional physician before taking the drug. Sildenafil citrate tablets are mainly used for the treatment of erectile dysfunction, after taking high blood pressure medication usually need an interval of about 24 hours before taking sildenafil citrate tablets, the longer the interval the safer it is. Because for patients who are taking antihypertensive drugs at the same time taking sildenafil citrate tablets may cause excessive lowering of blood pressure, so if you use sildenafil citrate tablets within a short period of time after taking high blood pressure medication with blood pressure-lowering effect, it will cause too low blood pressure, dizziness, nausea and other symptoms of hypotension. Most of the drug components have been metabolized and excreted from the body within 24 hours of taking high blood pressure medication, and then taking sildenafil is less likely to cause drug-drug interactions. However, due to the individual variability of the human body, should be used under the guidance of a professional physician, do not use without authorization, so as not to cause adverse consequences.