Patented in 1965, Prazosin is a medication primarily used to treat high blood pressure, symptoms of an enlarged prostate, and posttraumatic stress disorder. It can also be used to treat heart failure and Raynaud syndrome. It is worth noting that this medication works by relaxing the blood vessels so that blood can flow more easily through the body. It is also worth noting that blood pressure is a common condition and when not treated, can cause damage to the brain, heart, blood vessels, kidneys, and other parts of the body. As for the side effects of Prazosin, they include dizziness, sleepiness, nausea, and heart palpitations. Besides, this medication has other side effects that are more serious such as low blood pressure with standing and depression. There are actually no adequate and well controlled studies which establish the safety of this medication in pregnant women. Therefore, Prazosin hydrochloride should be used during pregnancy only if the potential benefit justifies the potential risk to the mother and fetus. Bear in mind that you should take this medication by mouth with or without food, usually two or three times daily or as directed by your doctor. And if stomach upset occurs, take Prazosin with food or milk.