I had been experiencing high blood pressure for 10 years. Chemicals only brought it down to border line, so I searched the Internet for an alternative that was 100 per cent safe. I started using Levodyn with the chemicals at first, now I just take the Levodyn occasionally. My blood pressure is like a young person's. I don't get any palpitations that I still would get with chemicals, and I feel a much calmer person. I would definitely recommend Levodyn.