Some are more general, such a dizziness when you stand up. Below are extracts of an excellent British Heart Association booklet, available as a PDF down load. There are many tablets available for reducing blood pressure. The aim is to lower the pressure gradually over several weeks or even months. Don't be worried if your doctor changes your tablets.
Doctors usually start with a low dose and slowly increase it.
If this is not enough, another type of tablet may be added. Sometimes combination tablets, which contain two drugs, are used. Your doctor may also change your tablets if they produce side effects. The vast majority of people taking tablets for high blood pressure feel perfectly well and have no side effects from the tablets. After starting new treatment it is only natural to think that any new symptoms must be caused by the treatment.