Not something I enjoy reading after being on lansoprazole for around 8 years for heartburn. I decided to get off them with dietary changes a couple years back after reading how they are approved for short term doses and long term effects were untested.
Doctors never showed much interest in discovering and treating the cause of the acid problem and even found it odd that I was trying to get off the tablets.
I haven't been able to find if the damage they potentially cause in areas beyond the stomach reverses over time.