Was diagnosed about 18 mo ago after having symptoms of a heart attack. Fortunately, no damage to the heart. After trying metoprolol with enalapril, but finding that the metoprolol left me feeling very tired and lowering my bpm too much, I was prescribed Bystolic to take with the enalapril. Seems to be working fine for the last 12 months and have had no other events. I do drink G2 gatorade now when exercising or when sweating a lot. This has also been effective in treating the problem although it does seem like when I get up quickly from a sitting position or bending over, the syncopy that I had experienced is slightly worse. Anyone else with similar experiences with different treatment or meds.