By Calis, are you referring to a supplement? Or something else?
As Jennifer said, if you have been diagnosed with high blood pressure (also called hypertension) it is important to keep it well-controlled, whether by medication or by lifestyle, diet & exercise changes. Uncontrolled it can lead to many very bad health issues - heart disease, stroke, kidney disease, atherosclerosis (hardening of the arteries). Until it is very high, it doesn't have symptoms, so monitoring is very important.
Have you seen a doctor and been prescribed medication?
Sue