I was on different PPi drugs for over 2 years. I started getting a sharp pain in my stomach that felt like a needle was stuck in there. I almost went in for an emergency xray to see if there was a piece of metal in there. The last straw was when I was having foot pain and the doctor told me I had osteoporosis in my feet.
I gradually got off the drugs by using carbonated water to strengthen my Lower esophageal sphincter. I still use antacids when needed, but they are much safer. The sharp stomach pain went away and I hope my bone density returns to normal.