Ever since taking naoproxen I have attacks varying in intensity, that make me feel very weak, extreme depression, feeling like passing out, sometimes naseau, and general malaise. When I take a deep breath, I feel ill and uncomfortable. I was originally given naproxen to treat pericarditis, an inflamation of the sac around the heart. Most of the inflamation might be gone, but I still feel "sick" . Has anyone experienced these related symptons?