Yes. Most doctors recommend that you take your regular medicine such as those to control blood pressure, at your usual time. If you use a small sip of water to swallow the pill there is usually no problem. Some medications not to miss around the time of surgery include those for blood pressure, diabetes, heart disease, psychiatric problem, birth control pills, etc.. Let your doctor know what medicine you take so they can advise you. If you have a general anesthetic, it is important that you tell the anesthesiologist about the medicines you take. Also mention that you have taken it with a sip of water the morning of surgery. If you use insulin, do not take it the morning of surgery. If you take blood thinners, such as coumadin, you must stop taking them for several days before surgery. You must discuss this with the doctor who prescribes them for you.
Birth control pills and hormones may increase your risk of blood clots in the legs and so unless you need them it is best to not take them for a few weeks before surgery.