I always find it rather concerning when I read of so many people taking PPIs long term. They should only be taken for a short period for relief of reflux, as there are contraindications to taking such medications long term.
As we grow older, our digestive system declines, and stomach acid reduces, but has the same symptoms as overproduction of acid, surprisingly. PPIs are the go-to medication by the medical profession, as they work so well, but no-one is ever tested for low stomach acid.
Stomach acid is essential for digesting food, and protects from several unpleasant infections such as Clostridium difficile, and absorption of necessary nutrients, such as calcium and Vit B12.
Long term use of PPIs can lead to Osteoporosis, and Pernicious anaemia, not to mention duodenal polyps which can become cancerous.
This web page by Chris Kresser, a leading practitioner Of Functional medicine (in the USA), is one of many he has written about the over use of PPIs, and the possible dangers.
chriskresser.com/what-everybody-ought-to-know-but-doesnt-about-heartburn-gerd/
I have had IBS for many years, and GERD/GORD too, as they seem to go hand-in-hand, but would refuse PPIs. I did try Nexium OTC once, but didn’t feel good on it, and it made me vomit, so I try to find alternative methods for relief such as Betaine HCL with pepsin, which replaces reduced stomach acid, and helps digestion.