Before LC, I was borderline to needing meds. Shortly in I was down to 140/80 something range, and now after a year and a half, I usually read in the 110/70 range.
My Mom (it runs in the family) was on meds for blood pressure, and even then was 140-150/90's. She is now cutting the meds out slowly, and still getting readings in the 120/80 range. She didn't have that much weight to lose, compared to me. Same for her SO, who went from horrible BP and cholesterol to blowing away his Doc with his results.