I started the Zona Machine about a year ago, my baseline pressure was 150/95, started on 3 meds but that was horrible, side effects (tired, etc) so I started to search for non medication method. On meds alone pressure was down to around 135/85, but my doctor wanted it lower. About 6 weeks after starting the Zona I noticed for the first time systolic below 130 and diastolic below 80. It has continued to drop to the point where I am now down to low dose of 1 drug (started with 3) and last Sunday my pressure was 109/64 on the same machine (at Sams) that I got my original reading of 150/95. I even think my internist is beginning to buy into it, which really suprises me. I know there are many skeptics out there, but I have really been suprised and pleased with the results I have achieved. There are many folks out there with same concerns I had so I hope this helps. Whatever you do, just get your pressure down and keep it down, I am an RN who works in a cath lab, so I see first hand the effects or what that high pressure does to the vascular endothelium.