Get moving at least a little bit every day, with a standard recommendation of 30-60 minutes a day, 3-5 times a week. Get your heart pumping at a moderate intensity for a few times a week, and mix it up with some strength training. Because life happens, on the days when you can’t fit it in, try to build more activity into your day by parking further away, taking the stairs instead of the elevator, or even just doing a quick sprint or two up and down the block. Every little bit helps.
There are many good options when it comes to such medication. Examples are ACE (angiotensin-converting-enzyme) inhibitors or AII-blockers (angiotensin II receptor blockers) such as Enalapril or Losartan. If this kind of medication doesn’t give the desired effect, you might have to add other medication such as so-called calcium antagonists (e.g. Felodipin) or a mild diuretic (can be found as a combined pill with Enalapril and Losartan).