Introduction: Rich in whole grains, legumes, nuts, and leafy green vegetables, magnesium is a necessary mineral. Magnesium functions as a cofactor in a few of our body's enzymes and is involved in the creation of several proteins. Thus, in order to manage the rise in blood pressure despite pharmaceutical treatment, it is important to investigate the magnesium levels in hypertensive individuals in order to understand the link between serum magnesium and blood pressure. This may be done by supplementing with and modifying diet. Materials and Methods: The body weight was measured in kilogrammes using a portable weighing machine, and the standing height was measured in centimetres using a stadiometer. To record the blood pressure, a standardised mercury sphygmomanometer was utilised. They were asked to provide a thorough history in order to rule out renal and kidney illnesses, diabetes mellitus, and secondary hypertension causes. Results: The serum magnesium level in Group B is comparatively lower than that of Groups A and C. The magnesium level in Group A is lower than in the control group. Group B has the lowest magnesium level among these groups, and Group A has a lower magnesium level as well. This difference is statistically significant. Conclusion: By modulating various mechanisms involved in the control of normal blood pressure, magnesium obtains its significance.