Young Hypertension. Under medication.

Three years back I was diagnosed with young hypertension.I was then 15 years old.My symptoms were constant headache.I was advised by a doctor to undergo all types of tests from Ultrasound to ECO/ECG,blood tests,etc.....All reports were 100% perfect and showed no problem.Doc said that It was hereditary....My greatgrandfather had bp from 13....my grand father from 32 ....my dad from 40..he advised me Antihypertensive medication...I am 18 now.....Every three months I get BP checked it is always normal 120-130/80...I have medication...I have no problems.My height is 180 cm and weight 94 kg...I have 2 nicardia 10 per day and 1 metolar 25...Can I stop or reduce the medicines...Or how can I maintain a long healthy life under medication...