Don't expect the Resperate to lower your BP as much as you need it lowered. Didn't the research, as indicated on the manufacturer's site, say the the average decrease was 14 systolic and 8 diastolic or something like that? (Sorry, I'm too lazy to go back and look.) But if you can't tolerate the BP meds, I guess any decreases you can get will help some.
I'm too cheap to buy the Resperate, so I'm just trying deep breathing exercises on my own. When my SBP is really up, I can often bring it down 20-30 points with just five minutes of deep breathing. Then it takes a while to build back up again. When my SBP is is the 120-130 range, I can usually bring it down about 10-20 points. I think so far that my average SBP (when I haven't recently been doing the exercises) has decreased around 8-10 points since I started doing this. (I ignore my diastolic, as my readings are usually in the 60s and 70s.) Maybe you want to join me in this little experiment:
My other suggestions would be to do everything you can to lower your BP through other non-medication means:
1. lose weight, if warranted
2. get plenty of aerobic exercise
3. eat a good diet with plenty of potassium from fruits and veggies (8-10 servings daily)
4. make sure your diet includes adequate calcium. (I recently discovered that my SBP went down about 30 points if I consumed a good source of calcium 2-3 times daily as opposed to having no calcium in the daily diet.