BEFORE starting on the Zoloft, the problems were situated more with the heart clenching pain. It was then that I was put at FIRST on Toprol XL
since I had been previously diagnosed with Mitral Valve Prolapse, and my doctor, assumming possibly the MVP would be causing my symptoms, put me on the Toprol.
It seemed to work GREAT for awhile, and there was maybe a whole week I had NO PROBLEMS since the start of the symptoms. However, the problems continued, so they UPPED my med.