I realize this is a very old thread, but I am so glad to have been sent it. My husband has Tachy/Brady syndrome...meaning his BP works backwards than most peoples. He has high blood pressure while at rest and then it drops suddenly when he starts to move around or sit up or stand up. It's the sudden drop that causes the fainting spells, not a consistent low BP. He is on medication to regulate his heart rate for the tachycardia (fast irregular heart beat)and bradycardia (slow irregular heart beat), but since the doctors are more concerned with the high bp than the low, they don't really concentrate on that and he can't really do many things anymore because of the sudden fainting. It usually only lasts a few seconds...just long enough to fall flat on his face, he tends to come to just as he hits the ground. You can imagine how debilitating and terrifying this can be. His doctors don't want to change the meds again so we have been looking for some natural ways to elevate his bp, I think I will start to add some salt back into his diet and see if that helps, also maybe a little caffeine, but I will definitely try the licorice.