High Heart Rate. I'm on Metoprolol 25mg twice daily for heart rate & Lisinopril 10mg/12.5mg twice daily for high blood pressure. Been on both for a few months now, with no problems. Also I'm on Gabapentin 300mg 3X daily for nerve damage right foot & take Tramadol 50mg 1tab. every 6hrs. for pain. lately I notice my pulse is fast. Just wondering if fast pulse & high heart rate are the same?