Can Plegridy damage your heart muscle?
Plegridy, like the other interferon-beta disease modifying therapies, are rarely associated with cardiomyopathy (weakening of the heart muscle). Symptoms of cardiomyopathy can be exertional fatigue, difficulty breathing, swelling (especially the legs), etc.
A. Scott Nielsen, MD MMSc
Neurologist and MS Specialist at Kaiser Permanente