PPI stands for Proton Pump Inhibitor.
Post-op our stomach still produces a lot of acid. A PPI, like Nexium or Prilosec, reduces the stomach acid, reduces hunger and prevents acid reflux.
I was on a PPI for 6 months post-op. Some people are on a PPI for a year or more post-op.
Nexium and Prilosec really helped me with acid post-op.