Yes, many people with high blood pressure can take Viagra safely, but there are a few things to keep in mind. It's usually OK if your blood pressure is well controlled (with or without medication), you are not taking nitrate medications (like nitroglycerin) for chest pain, or you are not on alpha-blockers unless closely monitored, as this combination can lower BP too much. Be careful if your blood pressure is very high or not well managed, if you are taking nitrates, or if you have had a heart attack, stroke, or serious heart condition recently.