Pantoprazole

Pantoprazole, sold under the brand name Protonix, among others, is a proton pump inhibitor 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. Effectiveness is similar to other proton pump inhibitors (PPIs). It is available by mouth and by injection into a vein.

Pantoprazole
Clinical data
Trade namesProtonix, others
AHFS/Drugs.comMonograph
MedlinePlusa601246
License data
Pregnancy
category
  • AU: B3
Routes of
administration		By mouth and intravenous
Drug classproton pump inhibitor
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only) / S2
  • UK: POM (Prescription only)
  • US: WARNINGRx-only
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Bioavailability77%
Protein binding98%
MetabolismLiver (CYP2C19, CYP3A4)
Elimination half-life1-2 hours
ExcretionUrine, feces
Identifiers
  • (RS)-6-(Difluoromethoxy)-2-[(3,4-dimethoxypyridin-2-yl)methylsulfinyl]-1H-benzo[d]imidazole
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.111.005
Chemical and physical data
FormulaC16H15F2N3O4S
Molar mass383.37 g·mol−1
3D model (JSmol)
ChiralityRacemic
  • FC(F)Oc1ccc2[nH]c(nc2c1)S(=O)Cc3nccc(OC)c3OC
  • InChI=1S/C16H15F2N3O4S/c1-23-13-5-6-19-12(14(13)24-2)8-26(22)16-20-10-4-3-9(25-15(17)18)7-11(10)21-16/h3-7,15H,8H2,1-2H3,(H,20,21) Y
  • Key:IQPSEEYGBUAQFF-UHFFFAOYSA-N Y
  (verify)

Common side effects include headaches, diarrhea, vomiting, abdominal pain, and joint pain. More serious side effects may include severe allergic reactions, a type of chronic inflammation known as atrophic gastritis, Clostridium difficile colitis, low magnesium, and vitamin B12 deficiency. Use in pregnancy appears to be safe. Pantoprazole is a proton pump inhibitor that decreases gastric acid secretion. It works by inactivating (H+/K+)-ATPase function in the stomach.

Study of pantoprazole began in 1985, and it came into medical use in Germany in 1994. It is available as a generic medication. In 2021, it was the nineteenth most commonly prescribed medication in the United States, with more than 27 million prescriptions.

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