H-2-receptor antagonists (H2RAs), which can reduce stomach acid. ... Proton pump inhibitors, such as lansoprazole (Prevacid 24HR) and omeprazole (Nexium 24HR, Prilosec OTC), which also can reduce stomach acid.
Stomach pain can occur due to common causes like acid reflux, indigestion, and food poisoning, as well as more serious causes like ulcers and appendicitis.