Not an easy question. There are many forms of hypertension and as many, if not more, treatments. Once diagnosed , your physician will probably start with a single agent like a diuretic.And life style changes (low salt, lose weight, etc). If this is not completely successful, they may add other agents while keeping the diuretic. This may progress to multiple drugs if the blood pressure results are not adequate.
Healthy living & med. Aerobic exercise such as brisk walking and a healthy diet low in salt and with whole grain and a variety of fruit and veggies as well as avoiding excess alcohol all help to naturally improve blood pressure. Beyond this there are many different types of medication available, the appropriate ones to be decided by your doctor based upon your circumstance.