What Causes Shortness Of Breath While On Amiodorine For Atrial Fibrillation?

Hello, I have Atrial Fib, I am on the drug Amiodorine, which helps to minimize the Atrial Fib Attacks, however the side effects of, shortness of breath, which stops me in my tracks, head fog, just for many days in a week, a strong feeling of unwellness.