Hypertension (HT) and cardiovascular diseases (CVD) share in that one of the main reasons for them is to increase the oxidative stress, which in turn increases the severity of the disease and exacerbation of symptoms. Reactive molecules produced from oxidative stress, in addition to causing tissue damage by oxidation of biomolecules like DNA, lipids, proteins and sugars; it is lead to the formation of mediators with potent inflammatory effect. The objective of this study was to investigate the some markers of oxidative stress in HT and CVD patients in addition to some biochemical parameters related to these diseases.