I developed osteopinia after 24 years of PPI use. When on PPIs your body doesn't absorb calcium carbonate. You need calcium citrate. I was 10yrs into PPI use when I learned that little tidbit. Also, you will not absorb protein bound vitamin B12 because of the higher pH in the stomach created by PPIs. This will cause you to become deficient, so research problems caused by this. If this happens you can also lose tastebuds.
I had to remain on these medications after a Nissan Fundalplication because of 8 cm of Barrets Esophagus and still having mild gerds. I am assuming you have a Hiatal Hernia and that's why a Nissan Fundalplication was mentioned. If that's not the case perhaps your lower esophageal sphincter is not functioning properly. A LINX Band would fix that.
When I had my Nissan Fundalplication I was 34yrs old and most of my stomach was in my chest. At the age of 59 in 2019 I had a repeat Hiatal hernia repair with a LINX Band placement. At that point I was double dosed on 2 different meds for Gerds, worsening reflux and a lot of painful heartburn. My surgeon told me if I had waited another year my stomach would have been in my chest again. Now 4 yrs post op I have mild heartburn again and another small Hiatal Hernia. The hole in the diaphragm just keeps coming back. I've been off PPIs for 4 yrs now. Hopefully I'm the odd patient with reoccurring problems and you won't experience any like that. Whatever I learned about deficiencies I learned on my own. No Dr ever mentioned anything.! Research, research, research. Good luck, Sylvia