Flecainide--fatigue, weight gain, some brain fog

Posted by daphne17 @daphne17, Apr 30 5:13pm

I have been on flecainide for about 5 1/2 years. Initially my dose was 100 mg twice a day. I became very fatigued. I told the Dr. and they reduced my dosage to 50 mg twice a day. I felt a bit better. My afib is now well controlled. However, after one year I gained 10 lbs. I continue to gain weight--over 15 lbs. since I initially started flecainide. I continue to have less and less stamina and seem to have brain fog at times. I'd like to know if anyone else has had similar issues with flecainide or whether my fatigue is related to something else.

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jennirdh | @jennirdh | May 2 7:14am

I have been on Flecainide for about the same amount of time, starting at 100mg 2x day and then to 50mg 2x day about 18 mos ago. I have never had an issue with this medication, and it’s probably my fifth anti arrhythmia drug over the years of my afib, SVTs, etc. I know of course different medications can affect ppl in different ways but I know two other people on it with no side effects as well.
Maybe something else is causing your symptoms..?

amala | @amala | May 2 11:37am

In reply to @jennirdh "I have been on Flecainide for about the same amount of time, starting at 100mg 2x..." + (show)

I was on Flecainide for three months when suddenly it caused me to go into ventricular fibrillation. I was in intensive care for three days, fortunate to have survived. Neuropathy developed two weeks after this. Be very cautious when on this drug.

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