I was taking protonix (acid-reducer) and Z-Pack and my tongue swelled-up. I then switched to Nexium and still swollen (Done with Z-Pack). I stopped the Nexium and switched to over the counter Zantac 75 (per DR.), which I have been on for 6 days now and still swollen with teeth marks all around the outside. I am going back to the DR. on Tuesday, but this has been going on for 3 weeks and was wondering if this is too long to be from an allergic reaction or interaction that was discontinued?