Omeprazole

Omeprazole is a proton-pump inhibitor used for treatment of dyspepsia, peptic ulcer disease, acid reflux, and Zollinger-Ellison syndrome. It's one of the most widely prescribed drugs in the world, and is available over-the-counter in some countries.
Side effects are rare but can include headache, dizziness, coughing, abdominal pain, diarrhea, nausea, vomiting, flatulence, constipation, back pain, weakness, and rashes.
It has very few drug interactions, and even fewer that are serious.
Omeprazole at Wikipedia
Category:Pharmaceuticals