Mrs D,

While I was in the hospital this past week, they became concerned with some tachycardia I was having. My heart rate was spiking up to 150 at times. They had a cardiologist looking at me, and are sending me for a tilt-table test tomorrow.

Should I be concerned that the amytriptyline is what's causing my tachycardia? I've been on 10mg a night since June. It really helps me sleep and I feel like it keeps me in check, but could it be causing damage to my heart?