Which brand name corresponds to the gastrointestinal agent Omeprazole?

Omeprazole is a medication that belongs to a class of drugs called proton pump inhibitors (PPIs), which are used to reduce stomach acid production. The brand name that corresponds to omeprazole is Prilosec. This medication is commonly prescribed for conditions such as gastroesophageal reflux disease (GERD) and peptic ulcers, where it helps to alleviate symptoms by reducing the acidity in the stomach.

The other options listed are different medications with distinct uses. Maalox is an antacid that neutralizes stomach acid but does not work in the same way as omeprazole. Zantac, which is another name for ranitidine, is an H2 blocker that also reduces stomach acid but operates through a different mechanism than PPIs like omeprazole. Synthroid is a brand name for levothyroxine, which is used to treat hypothyroidism and has no relation to gastrointestinal health or acid suppression. Thus, Prilosec is the accurate brand name associated with omeprazole, reflecting its function as a gastrointestinal agent.