Are omeprazole the same as cimetidine?

No, omeprazole and cimetidine are not the same; they are different medications used to treat gastric acid-related conditions. Omeprazole is a proton pump inhibitor (PPI) that reduces stomach acid production, while cimetidine is an H2 receptor antagonist that blocks histamine receptors to decrease acid secretion. Both are effective for conditions like gastroesophageal reflux disease (GERD), but they work through different mechanisms and may have different side effects and interactions.