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Lasting side effects of various heart medications

I am a 74-year-old male and have had periodic episodes of atrial fibrillation since 1973. It was controlled for many years with Digoxin supplemented with low dosage aspirin. When I experienced tachycardia and fibrillation it never lasted more than three days and then my heart would recover spontaneously.  Three years ago the frequency of my occurrences of fibrillation and tachycardia increased significantly, especially while playing tennis. After an episode during which it took about 8 days to recover my cardiologist put me on Coumadin to prevent the formation of a blood clot and after I recovered, changed my medicine to Tambocor. While on this drug I experienced tremors in both of my hands and on occasions I would experience extreme body cold. After 2 months I was taken off Tambocor because my doctor had reservations about this drug, and placed on Atenolol. I remained on that drug for about 8 months. However, the two significant negative side effects mentioned remained. I also now suffer insomnia, although I
3 Responses
74076 tn?1189755832
Hi Dabernz,

Atrial fibrillation is common problem that becomes more frequent as we, as a population, grow older.

Tambocor (flecainide) is a medication used to treat atrial fibrillation in patients without coronary artery disease.  It is true that tremor is a known side effect of flecainide, but symptoms resolve after the medication is discontinued.

The same is true for atenolol and insomnia--the side effect should abate when you discontinue the medication.  Atenolol may cause cool extremities, but not frank chills.

For someone your age, a new onset tremor could be an essential tremor or less likely Parkinson
Avatar universal
It's good that the meds have controlled your AFIB.

I'm 49 and had to get an ablation for AFIB which worked great.

Mayo recommended I just stay on atenolol even though I have no arrythmia problems.

Atenolol does give me insomnia.  I fall asleep fine, but wake up after 4 hours and can't get back to sleep.  One of the major side effects of Atenolol is insomnia.

My doctor prescribed a small dose of clonazepam (sp?).  This enables me to sleep and works great.  It's a mild sedative.  I don't take enough to get "hooked" on it, but just enough to counteract atenolol to help me sleep.  You might ask your doctor about it.
Avatar universal
I take Tambocor Flecainide Acetate 100mg twice a day for 2 years and it really controls my VT from Left Ventricular Outflow Track.   However, I feel difficult to breath recently, and consult doctor yesterday. He founds that there are one new VT position which is from the left artrium.  The doctor also advises me to stop the medicine and suspects it may be the side effect of the Tambocor.
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