I'm have gastritis and prescribed 40mg pantoprazole for 3 months by gastro doc and now my URO doc started me on Keflex antibiotic for 6 months for chronic utis. Been on both meds for 1 month now, After a month on the pantoprazole I still have the upper stomach pain. I ask the gastro doc if the antibiotic could be keeping the stomach from healing, he said yes. He wants me to now take 40mg pantoprazole Twice a day (80mg). I have osteoporosis and terrified the 80mg will break my bones, also, I read 80mg is way too much. Been miserable too long. Any advice please?