Dear Dr. Roach: I just discontinued using metoprolol succinate extended release (ER) at a dosage of 6.25 mg. My heart rate is normally in the 70-80s, and my blood pressure is normal. My doctor prescribed metoprolol for palpitations, but it seems totally unnecessary. My issue is that I am experiencing tachycardia of over 100 beats every single night as well as dry mouth.

Could this be anxiety? And do you think an antidepressant like Zoloft or Paxil would help? I had a Holter monitor, which showed nothing wrong with my heart. The palpitations were sporadic only when I was anxious.

I stopped metoprolol because it exacerbated my anxiety and caused me depression as well as panic attacks. My doctor prescribed me 1 mg of Ativan to take at bedtime, but I am very scared of getting addicted to it

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