Hi, I Am A Blood Pressure Patient, Given Irbesartan X

Hi, I am a blood pressure patient, given irbesartan x 2 and had the same reaction, heart irrg. swelling throat needed to sleep upright, the irrg heart was scary, I tried 3 days had to quit. Tri care won't pay for Avapro, so we do at 550.00 for 90 days. What is in it to cause problems? Is there a better generic??
Thank You Nancy I. Springer YYYY@YYYY