I Have Been Taking Olmatec For High Blood Pressure And

I have been taking olmatec for high blood pressure and it worked however 4 weeks ago I quit smoking and started feeling unwell in the last couple of days - dizzy nausea. Went to my dr this morning and my blood pressure was very low and he said stop taking the olmatec and come back Monday and we will check it again. So my question is how long does it take for olmatec to go out of your system. Should I start to feel better later today?