3 doctors weighed in:
Why do I have shortness of breath while taking flecainide for an irregular heartbeat?
3 doctors weighed in

Dr. Charles Jost
Internal Medicine - Cardiology
1 doctor agrees
In brief: Side effects, see dr
Flecainide has many side effects, shortness of breath is one of them. Suggest a visit to a cardiologist to verify that the heart is doing well.
Just because something is a known side effect, doesn't mean it should be ignored or not be investigated.

In brief: Side effects, see dr
Flecainide has many side effects, shortness of breath is one of them. Suggest a visit to a cardiologist to verify that the heart is doing well.
Just because something is a known side effect, doesn't mean it should be ignored or not be investigated.
Dr. Charles Jost
Dr. Charles Jost
Thank
Dr. Thomas Klein
Internal Medicine - Allergy & Immunology
In brief: See your doctor
Flecainide is used for irregular heartbeats.
It can cause worsening of irregular heart beats as well, especially if there is a history of a heart attack. Such worsening could cause shortness of breath (sob). Signs of heart failure may occur with too much Flecainide in your system. The underlying irregular heart beat itself, not flecainide, could also cause sob. See your doctor for more info.

In brief: See your doctor
Flecainide is used for irregular heartbeats.
It can cause worsening of irregular heart beats as well, especially if there is a history of a heart attack. Such worsening could cause shortness of breath (sob). Signs of heart failure may occur with too much Flecainide in your system. The underlying irregular heart beat itself, not flecainide, could also cause sob. See your doctor for more info.
Dr. Thomas Klein
Dr. Thomas Klein
Thank
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