Lanfil 30 Disintegrating Tablet 15's is used to treat stomach and intestinal ulcers, inflammation of the food pipe (oesophagus), gastro-oesophageal reflux disease - GERD (reflux of gastric contents into the oesophagus), heartburn, regurgitation, ulcers caused by the usage of pain killers, infections caused by Helicobacter pylori when given along with an antibiotic, and Zollinger-Ellison syndrome. It contains Lansoprazole, which works to reduce the production of acid and heals the ulcers and prevents the formation of new ulcers. In some cases, you may experience certain common side effects such as headache, dizziness, diarrhoea, constipation, flatulence (wind), stomach pain, tiredness, and dry or sore mouth or throat.