Hi. I Have Been Taking TELMA 20 Mg Tablets For

hi. I have been taking TELMA 20 mg tablets for my hyper tension. My BP readings are usually LESS than 120/80 if I take medicine daily. I have been taking one tablet in the morning for the last 5 years without change of the dosage. Several time I skipped medicines for a week or so without any appreciable change in the readings. If I maintain the BP readings of BELOW 130/90 can I stop the medicine. I am [male]aged 65 years with 160 lb weight and height 5 ft 4 inches. I walk 3 miles a day 4-5 days in a week and lead a active life. I live in INDIA visiting USA each year. Pl advise.