I can speak on this, I was prescribed clonidine by an ER doctor, lowest dose made right before bed (script was for 20, which has since ran out)
Clonidine is used in a number of different ways predominately as a BP med, especially in emergency situations. Its also a mild sedative, sometimes prescribed in conjunction with other meds to help with alcohol withdrawal, heroind, cocaine, etc.
the pharmacology behind it is that it basically signals certain receptors in the brain to relax the smooth vessels which equals decrease in peripheral vascular resistance which = decrease in BP
The first question that anyone would ask is, if I'm not hypertensive, could taking clonidine lower my bp to dangerous levels? In all the med journals I have read about the drug being used for withdrawal, even as a sleep aid I haven't come across anything that would suggest this. I asked the ER doctor and he simply said no, even after I explained I run normal BP when not anxious. Mine was so high at the time I think as an ER doc hes somehow obligated to prescribe something to put down in print, he also gave me a script for xanax with no refills