In those with significant carotid artery or circulatory diseases, systolic pressures should not be lowered much below 140 or 150. In these people, sudden drops or surges of blood pressure should be avoided. High blood pressure is a straightforward, important medical problem. It is a major contributing factor to long term risk of stroke and heart attacks. Unfortunately, there are millions of Americans who have excessively high blood pressure that is not treated.
Current medicines are safe enough that the risk of drug therapy in minimal.
A medication can almost always be found which will allow effective treatment of the high blood pressure with minimal or no side effects. So have your blood pressure measured. If it is high, but you are healthy and otherwise feeling well, do not panic, but do get several more readings. If the readings are consistently high, seek further advice from your physician.