My question is this. I have been having tight chest and
coughing. A slight heaviness sensation in my chest
. I saw that side effects for this med consitst of heart failure and heart block. I just want to make sure these are not side effects of allergies, but rather possible heart block from my med!? I am 24 years old, have had more heart tests then most people who need it on this site. Echo, Stress tests, EKGs, Holters, all look good, just periods of inappropraite sinus tachycardia.