My husband, Ken, has been taking midodrine for almost two years now. He has shy-drager syndrome in addition to PD. When he stands up, his blood pressure can drop to 60/20 in seconds and he will probably pass out. If he lies flat on his back, his blood pressure rises to 220/110 also within seconds. We aim to get his daytime sitting blood pressure to stay around 170/90 to make it possible for him to take a thirty point drop immediately upon standing. For a number of years we accomplished this with florinef and salt and fluids, but eventually that was not enough and midodrine came on the market. He now takes all the rest and midodrine, and he rarely passes out anymore. He takes the last midodrine at least four hours before bedtime and sleeps with his head raised to keep the nighttime BP as low as possible, but it is usually quite high anyway. It seems to me that if a PWP has both high and low BP at different times that he doesn't have the kind of high BP that should be brought down with meds. At least that is what our doctors say. People with shy-drager syndrome seldom have strokes(but not never) from their high BP, but their low BP can cause head injuries- my husband fell once and was hospitalized for ten days with cranial bleeding. That's when the shy-dragers was diagnosed. He has had stitches too many times to tell. Now he has a full- time helper who stands by him whenever he stands up to be sure he's not going down. He has had parkinsons diagnosed for 17 years and shy-dragers for 7 years diagnosed. Barbar Smith,CG/Ken