Omeprazole vs. Pantoprazole

(pharmaceutical drug) A substituted benzimidazole (trademark Losec, Prilosec) which is a proton pump inhibitor and inhibits secretion of gastric acid, being given orally in the treatment of ulcers and gastroesophageal reflux; 5-methoxy-2-(4-methoxy-3,5-dimethyl-2-pyridylmethylsulfinyl)benzimidazole, C17H19N3O3S.

antacid (trade name Prilosec) that suppresses acid secretion in the stomach

Omeprazole, sold under the brand names Prilosec and Losec among others, is a medication used in the treatment of gastroesophageal reflux disease (GERD), peptic ulcer disease, and Zollinger–Ellison syndrome. It is also used to prevent upper gastrointestinal bleeding in people who are at high risk.

(pharmaceutical drug) A benzimidazole derivative (trademark Protonix) that inhibits gastric acid secretion and is administered in the form of its sodium salt C16H14F2N3NaO4S to treat erosive esophagitis and disorders (as Zollinger–Ellison syndrome) involving gastric acid hypersecretion.

Pantoprazole, sold under the brand name Protonix, among others, is a medication used for the treatment of stomach ulcers, short-term treatment of erosive esophagitis due to gastroesophageal reflux disease (GERD), maintenance of healing of erosive esophagitis, and pathological hypersecretory conditions including Zollinger–Ellison syndrome. It may also be used along with other medications to eliminate Helicobacter pylori.