I used to feel tightness n my chest as if an elephant was sitting on my chest. I had difficulty breathing, with episodes of my pulse getting too high. I was in and out of emergency quite a few times and had a bunch of tests, EKG, chest x-rays, and whatnot. Drs kept dismissing my heart health concerns, giving me pills to swallow to keep my anxiety and bp under control, but those pills weren’t a cure. When I first came across Cardio Tonus, I was a bit skeptical, but to my surprise, continuous usage of the pills showed the difference. Firstly, the tightness in my chest and the racing heartbeat became calm. I don’t feel shortness of breath after any physical exertion, either. These pills work!