GERD
"I took Protonix 40mg for about two and a half weeks. My doctor prescribed this after my insurance no longer covered my Nexium that I had been on for years.  I had intermittent headaches and also had stomach pains and nausea. The nausea is horrible, and I have been off of it for a day now and nausea is still persisting. I feel like I have to vomit from the nausea. I do not recommend this drug. I had no side effects with my Nexium,  so now I will try omeprazole."