I have been told over years, I have heart murmur, leaking valve, or not so, but have been on Lanoxin for over 20 years and finally switched to Verapamil as Toprol gave me nightmares or vivid dreams for two months. I recently developed a steady low weakening feeling of pain in my left arm and tingling in left hand and foot as well. I've experience these feelings before and went away, but now it is staying with me for last 3 months. I've recently had MRI, MRA, Echogram, and wearing a Holter (4th time) Never had a tube been down my throat to see if anything has been happening there, as I have burped louding for many years. What can this be? I' had 3 catherization in last 15 years. Nothing there.