Hi Claire,
The reason you were given lansoprazole was to reduce the acid to permit your gastritis to heal. Which it did.
The PPI drugs (like lansoprazole) reduce acid but not reflux. The pains of reflux may be very similar to those of heart condition. (I have had so many heart tests - ECGs, Echo-grams etc, I even have an implanted heart monitor. All my results show my heart is perfectly healthy but my Dad died of a heart attack when I was a boy. He'd had acid reflux problems all his life and probably thought this was just another attack.
I was on PPIs for 15 years (increaing to 80mg omeprazole) . But, though the drugs are good at reducing the acid, they still permit reflux to occur.
Reflux of acid can cause permanent damage (Barrett's Oesophagus) which can mutate via stages of dysplasia to adenocarcinoma (cancer) . Research has shown PPIs probably have a chemo-protective effect to prevent the mutation.
If you go to the www DownWithAcid or uk site and scroll to the bottom of the homepage, you'll find the NICE Option Grid in the appendices which discusses the pros and cons of lifetime PPIs vs surgery.
I had a Laparoscopic Nissen Fundoplication 8 years ago and it totally changed my life. (Hiatus Hernia repair is part of that operation.)
Prior to the op, I was anaemic from PPI induced hypochlorhydria and couldn't walk more than 50 yards. Immediately after the op, I was drug free and a few weeks later was cycling 20 to 30 miles every day before breakfast. And all my reflux symptoms either vanished or reduced considerably.
You may read my personal blog of that operation on my personal website www chrisrob co uk. Select "Barretts" from the side bar and then "7 The Laparascopic Nissen Fundoplication" from that page's contents.
Based on my own experience, I would recommend anyone to consider surgery as an alternative.
A Spanish research paper "A comparison of medical versus surgical treatment in Barrett's esophagus acid control" published 3rd November showed surgery was superior to medicine in reflux control.
An American study published less than a fortnight ago, "Reflux control is important in the management of Barrett's Esophagus: results from a retrospective 1,830 patient cohort." concluded, "Reflux control was associated with decreased risk of progression to low-grade dysplasia, high-grade dysplasia, or esophageal adenocarcinoma."