Blood pressure refers to the force exerted by circulating blood on the walls of blood vessels and constitutes one of the principal vital signs. The pressure of the circulating blood decreases as blood moves through arteries, arterioles, capillaries, and veins; the term blood pressure generally refers to arterial pressure, i.e., the pressure in the larger arteries, arteries being the blood vessels which take blood away from the heart.
In general, lower doses of blood pressure medicine are as effective as higher doses and cause fewer side effects. So, when trying to find effective single-drug therapy, doctors usually begin with a low dose. They may decide to increase the dose a bit if the initial dose is ineffective—but it is rarely useful to “push” the dose of a single-drug therapy into the higher dosage ranges. Instead, if a drug fails to work at a relatively low dose, it is time to switch to a low dose of a different drug.
There are many popular medical myths about high blood pressure. For example, many physicians believe that high blood pressure is an “inevitable consequence of aging;” that the “only viable treatment option for high blood pressure patients is medication”; that high blood pressure patients must take their medications “for the rest of their lives”; and, worst of all, that high blood pressure medications are “safe and effective.”
Regular visits with your doctor are also key to controlling your blood pressure. If your blood pressure is well-controlled, check with your doctor about how often you need to check it. Your doctor may suggest checking it daily or less often. If you're making any changes in your medications or other treatments, your doctor may recommend you check your blood pressure starting two weeks after treatment changes and a week before your next appointment.