I just returned from my monthly doctor's appointment. I went armed with six weeks' worth of HR and BP statistics presented in graphic form. My doctor seemed shocked at the numbers; in particular, how high my HR goes while doing the basics, and how low my blood pressure is. I was surprised she didn't seem concerned about pulse pressures ranging from 11 to 56. But, she did ask to keep the charts for "bedtime reading", allowing her to study them in more detail. I'm fortunate to have a very dedicated doctor. She is no longer willing to defer putting me on medication to lower my heart rate. She asked that I consider three medications before my next appointment. It seems her first choice would be Bisoprolol (1.25 mg). The other two are Metaprolol and Diltiazem (no doses mentioned). Does anyone have experience with these medications? Any ideas which one would be most suitable for someone with histamine issues?