Was thinking about the PPI and renal function issue this week. Been having considerable foaming during urination so I bought some protein sticks, maybe a trace measured after different time of the day. Creatinine has been stable for years, but thinking of switching to an H2 drug for relux. Been on lansoprazole and celebrex for about 20 years, don't want to push it. Have a moderate size hiatal hernia and without PPIs I have serious heart burn and don't want Barretts. Cut the dosing back to once a day and it is OK. Will talk to my doc next month about switching and see along with a 24 urine protein sample.