The drug that dilates blood vessels, will the blood vessels shrink after stopping the drug?

First of all, drugs have a half-life, according to the half-life of the different number of different drugs, is to maintain the concentration of drugs in the blood, in this concentration of diastolic blood vessels, etc., to achieve the purpose of lowering blood pressure, there is no such thing as the kind of back and forth changes that you said, and secondly, high blood pressure on the blood vessel damage is far greater than you want to shrink blood vessels