Is it normal for a person to have high BP one day and then low BP the next day? This is happens to me whether I take BP meds or not.
Since you take blood pressure medication, it is likely that your pressure is not stable because you are not taking your blood pressure medications properly. Drugs are metabolized by the body and a blood level is established in your body which controls your blood pressure when medications are taken about the same time of day on a regular basis. Different drugs have different rates of metabolism so the effect of one drug may last longer than another. In addition, stress, salt ingestion, and other drugs and supplements can affect blood pressure.