Based on this info:
http://bidocs.boehringer-ingelheim.c...tapresTabs.pdf
The half life is about 16 hrs and therefore Clonidine will be gone in 5 times that. Note that they recomend adjustments in weeky intervals.
I seriously doubt the diuretic will be problem to stop immediately.
atenol is a very rapid acting drug whose effects last for 24 hours.
http://www1.astrazeneca-us.com/pi/tenormin.pdf
It would make sense to ask. It would be nice to have a BP meter at home. You can raise your own blood pressure by drinking more fluids.
If it were me based on what I just read. I'd drop the current regimn for 2 days before starting the new drug. I'd monitor blood pressure along the way and drink more fluids if it tends to head up to an unsafe level.
You can think of it this way. Low blood pressure is an immediate problem and high blood pressure is a transient problem. You can raise your own BP by increasing fluids. Do the medicaton adjustments where the peak action of the med will be during the waking hours. You can change later.
It's wise to check with your doctor.