|Trade names||Protonix, others|
|By mouth and intravenous|
|Drug class||proton pump inhibitor|
|Elimination half-life||1-2 hours|
|CompTox Dashboard (EPA)|
|Chemical and physical data|
|Molar mass||383.37 g·mol−1|
|3D model (JSmol)|
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. Effectiveness is similar to other proton pump inhibitors (PPIs). It is available by mouth and by injection into a vein.
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 2017, it was the 19th most commonly prescribed medication in the United States, with more than 27 million prescriptions.
Pantoprazole is used for short-term treatment of erosion and ulceration of the esophagus for adults and children five years of age and older caused by gastroesophageal reflux disease. It can be used as a maintenance therapy for long-term use after initial response is obtained, but there have not been any controlled studies about the use of pantoprazole past a duration of 12 months. Pantoprazole may also be used in combination with antibiotics to treat ulcers caused by Helicobacter pylori. It can also be used for long-term treatment of Zollinger-Ellison syndrome. It may be used to prevent gastric ulcers in those taking NSAIDs.
Pantoprazole is only indicated for the short-term treatment of erosive esophagitis in children ages seven and older; and the safety and effectiveness of pantoprazole have only been established in the treatment of erosive esophagitis in children.
The incidence of adverse effects occurring in people aged 65 years and older was similar to that in people aged 65 years and less.
Pantoprazole has been found to pass through the breast milk. However, in rodent cancer studies, pantoprazole has been shown to potentially cause tumor growth. The clinical relevance of the finding is unknown, but risks and benefits are recommended for consideration in determining the use of therapy for the mother and child.
- Infection: Stomach acid plays a role in killing ingested bacteria. Use of pantoprazole may increase the chance of developing infections such as pneumonia, particularly in hospitalized patients.
- Gastrointestinal: abdominal pain (6%), diarrhea (9%), flatulence (4%), nausea (7%), vomiting (4%)
- Neurologic: headache (12%), dizziness (3%)
- Neuromuscular and skeletal: arthralgia (3%)
- Gastrointestinal: constipation, dry mouth, hepatitis
- Blood problems: low white blood cell count, thrombocytopenia
- Immunologic: Stevens–Johnson syndrome, toxic epidermal necrolysis
- Metabolic: elevated creatine kinase, elevated cholesterol levels, elevated liver enzymes (AST/ALT), swelling
- Musculoskeletal: Muscle disorders, bone fracture and infection, Clostridium difficile infection, osteoporosis-related hip fracture, rhabdomyolysis
- Kidneys: interstitial nephritis
- Nutrition: may reduce the absorption of important nutrients, vitamins, and minerals, including certain medications, leaving users at increased risk for pneumonia.
- Osteoporosis and bone fracture have been observed in people on high-dose and/or long-term (over one year) prescription proton pump inhibitors.
- Hypomagnesia has been observed in people on medications like pantoprazole when taken for longer periods of time (generally one year or more, although cases have been reported with regimens as short as three months).
In people taking PPIs for longer than six months, a dose taper should be considered prior to discontinuation. For those on a moderate- to high-dose this can be done by 50 percent every week until on the lowest dose. After a week it can then be stopped.
- Acidity: Due to its effect of reducing stomach acidity, use of pantoprazole can affect absorption of drugs that are pH-sensitive such as ampicillin esters, ketoconazole, atazanavir, iron salts, amphetamine and mycophenolate mofetil.
The mechanism of action of pantoprazole is to inhibit the final step in gastric acid production. In the gastric parietal cell of the stomach, pantoprazole covalently binds to the H+/K+ ATP pump to inhibit gastric acid and basal acid secretion. The covalent binding prevents acid secretion for up to 24 hours and longer.
Pantoprazole is metabolized in the liver by the cytochrome P450 system. Metabolism mainly consists of demethylation by CYP2C19 followed by sulfation. Another metabolic pathway is oxidation by CYP3A4. Pantoprazole metabolites are not thought to have any pharmacological significance. It is usually given with a prokinetic drug because of inactivity in the acidic environment of the stomach. Pantoprazole binds irreversibly to H+K+ATPase (proton pumps) to suppress the secretion of acid. Due to irreversible binding of the pumps, new pumps have to be made before acid production can be resumed. The drug's plasma half-life is about two hours.
Pantoprazole was discovered by scientists at Byk Gulden, a subsidiary of Altana; the drug discovery program started in 1980 and which produced pantoprazole in 1985 - the compound was actually created by chemists working on scaleup of a different chemical that had been chosen as a development candidate.:117,129 Byk Gulden partnered with Smith Kline & French in 1984.:124 The compound's development names were BY1029 and SK&F96022.:123 By 1986 the companies had created the sodium salt, pantoprazole sodium sesquihydrate, and decided to develop it as it was more soluble and stable, and was more compatible with other ingredients used in the formulation.:130 It was first marketed in Germany in 1994.:130 Wyeth licensed the US patent from Altana, and obtained marketing approval from the US FDA in 2000 under the trade name Protonix.
In 2004, worldwide sales of the drug were $3.65 billion, about half of which were in the US.
The patent protecting the drug was set to expire in 2010, but Teva Pharmaceuticals filed an Abbreviated New Drug Application (ANDA) in 2007, and Wyeth and Nycomed sued Teva for patent infringement, but Teva decided to launch its generic drug "at risk" that year, before the patent had been invalidated. Wyeth launched an authorized generic in 2008. Pfizer and Takeda's patent exclusivity expired in 2010, and an administrative exclusivity they had for pediatric use expired in January 2011, and full generic competition began. The litigation between Teva and Pfizer/Takeda was settled in 2013, with Teva paying the patent holders $2.15 billion in damages for its early launch.
Society and culture
As of 2017[update], the drug was marketed under many brands worldwide, including as a combination drug with domperidone, a combination with itopride, in combination with both clarithromycin and amoxicillin, in combination with levosulpiride, and in combination with naproxen.
List of brand names
As of 2017[update], it was marketed under many brands worldwide, including: Acernix, Aciban, Acida, Acido-X, Acidrol, Acidwell, Acilib, Acilibre, Acillect, Acipan, Acrid, Alapanzol, Amphoter, Anagastra, Anesteloc, Antaxid, Antopral, Anulacid, Anxel, Apazol, Appryo, Aptizole, Apton, Armcid, Asoprazole, Aspan, Aurizol-P, Awamed, Azatol, Biotop V, Brandocare, Branzol, Buffet, Buscopan Reflusso, Caprol, Ciprazol, Citrel, Clessol, Comenazol, Conoran, Contix, Contracid, Contraflux, Contro-Cap, Controloc, Controloc, Cool Pan, Delpanto EC, Digene Total, Digespan, Dosanloc, Empaflun, Eracid, Erprazol, Esopan, Eupantol, Exopan, Extream, Extreme, F-Pan, Farmazol, Fenix, Fexmor, Fu Shi Tan, Fulpan, Fupan, Gastblok, Gastenz, Gastrazol-L, Gastriwin, Gastrolan, Gastroloc, Gastromax, Gastronorm, Gastroprozal, Gastrostad, Gastrowell, Gastrozol, Gerdamegh, Gerprazol, Gesoflux, Gondea, Gopan, Hansazol, Hasanloc, Helix, Iboprot, Inipant, Inipepsia, Inipomp, IPP, Ippracid, Ipraalox, Kaiji, Kairol, Letopra, Loxanto, Luoxu, Lupipan, Maalox, Mag, Manez, Marozel, Monpan, Nelgast, Nexpan, Noacid, Noacid, Nolpaza, Nolpaza, Normogastrol, Noxadif, Ntap, Nuosen, Nupenta, Oritop, Osipan, Ozepran, Ozpan, Ozzion, P-20, P-40, P-Bit, P-OD, P-PPI, P-Zole, Pacid, Paciddia, Palio, Palmy, Pamel, Pamtrazol, Pamyl, Pan, Panbloc, Pancleus, Pancrazio, Pandev, Pane, Panfast, Pangest, Panglen, Panlan, Panlisu, Panloc, Panloz, Panmeilu, Panocer, Panogastin, Panopaz, Panor, Panoral, Panore, Panpot, Panpra, Panprabene, Panprax, Panprazol, Panprazox, Panpro, Panproton, Panpure, Panrazol, Panrazole, Panrbe, Panref, Pansa, Pansec, Panso, Pantac, Pantacid, Pantact, Pantagi, Pantakind, Pantaltius, Pantap, Pantasur, Pantaz, Pantazol, Pantecta, Pantex, Pantexel, Pantezol, Panthec, Panthron, Pantid, Pantin, Pantip, Pantium, Panto, Panto-Denk, Panto-Gas, Pantobex, Pantoc, Pantocal, Pantocar, Pantocare, Pantocas, Pantocer, Pantocid, Pantocim, Pantocom, Pantocure, Pantodac, Pantodar, Pantofin, Pantofir, Pantogastrix, Pantogen, Pantogerolan, PantoJenson, Pantokem, Pantokool, Pantolax, Pantoline, Pantoloc, Pantolok, Pantolup, Pantomax, Pantomed, Pantometylentina, Pantomyl, Pantonis, Pantonix, Pantop, Pantopacid, Pantopan, Pantopaz, Pantopep, Pantopi, Pantopra-Q, Pantopraz, Pantoprazal, Pantoprazol, Pantoprazole, Pantoprazolo, Pantoprazolum, Pantoprem, Pantoprix, Pantoprol, Pantopump, Pantor, Pantorc, Pantoren, Pantorica, Pantosal, Pantosan, Pantosec, Pantosid, Pantostad, Pantotab, Pantotis, Pantover, Pantoz, Pantozim, Pantozol, Pantozole, Pantpas, Pantra, Pantrol, Pantroz, Pantul, Pantune, Pantus, Panveda, Panvell, Panz, Panzat, Panzel, Panzilan, Panzilan, Panzol, Panzole, Panzor, Parastamic, Paz, Peblo, Penkool, Penlip, Pentalink, Pentastar, Pentowin, Pentoz, Pentozed, Peploc, Peptac, Peptazol, Peptazole, Pepticaid, Pepticool, Peptix, Peptoloc, Pepzol, Perloc, Pipanzin, Pozola, Praize, Pranza, Praz-Up, Prazobloc, Prazocid, Prazolacid, Prazolan, Prazole, Prazolpan, Prazopant, Pregel, Prevacid, Previfect, Previfect, Progen, Prolex, Promtec, Propanz, Protech, Protinum, Protium, Protocent, Protocid, Protofix, Protoloc, Proton, Proton-P, Protonex, Protonil, Protonix, Protopan, PTA, Pulcet, Pumpisel, Ranloc, Razon, Rcpan, Redacib, Refluxine, Refluxopan, rifun, Ripane, Roxitrol, Sedipanto, Segregam, Seltraz, Sipar, Sodac, Somac, Sozol, Stamic, Stomafor, Stripole, Sumipral, Supacid, Super OM, Suppi, Supracam, Supracid, Surmera, Tai Mei Ni Ke, Tecta, Tonval, Topazol, Topra, Topraz, Topzole, Toraflux, Tropaz, Trupan, Ulceron, Ulcoreks, Ulcotenal, Ulprix, Ulsepan, Ulstop, Ultop, Ultoz, Unigastrozol, Vencid, Ventro-Pant, Vomizole, Wei Di, Wei Ke An, Wonon, Xotepic, Yoevid, Zamotil, Zaprol, Zencopan, Zgaton, Zimpax, Zipant, Zipantol, Zipantola, Ziprol, Zolan, Zolemer, Zolpan, Zolpanz, Zolpra, Zoltex, Zoltum, Zontop, Zoprax, Zovanta, Zurcal, and Zurcazol.
It was marketed as a combination drug with domperidone under the brand names Aciban-DSR, Acillect-DSR, Asoprazole-D, Buffet-DXR, Depam, Domelong P, Dycizol, Eracid-D, F-Pan DSR, Fulpan-D, Fulpan-DSR, Gerdom, Gi-Fri, Gopan-D, Gopan-DSR, GR8-OD, Kurepane-DSR, Latop-D, Monpan-D, Monpan-DSR, Nupenta-DSR, Odipan-DSR, Oritop-D, Oritop-DSR, P-Bit-D, P-Bit-DSR, P-Zole DSR, P-Zole-D, PAA-DSR, Palio-D, Pamtrazol-D, Pan-D, Pancrazio-DSR, Pandiff, Pandostal, Pandostal-OD, Panfast-DSR, Panopaz-D, Panor-D, Panpot-DSR, Pansa-D, Pantact-D, Pantin-D, Pantin-RD, Pantocar-D, Pantocom-D, Pantoflux, Pantojoy-DXR, Pantokool-D, Pantolex-DS, Pantopacid-D, Pantopacid-SR, Pantorica-D, Pantozol-D, Pantozol-DSR, Pantra-D, Pantune-D, Panveda-D, Panzo-D, Panzol Plus, Panzol-D, Paz-DN, Peblo-D, Peblo-DSR, Penkool-DSR, Penlip-D, Pentalink-D, Pentastar-D, Pentozed-D, Peptac D, Peptac DSR, Pepticool-DXR, Pintel-DSR, Pop-DSR, Praize-D, Praize-D Forte, Prazole Plus, Prazosan-DSR, Predom, Predom-OD, Prolex-DSR, Prolus-DSR, Protocent-DSR, Protopan-D, Protopan-H, Ripane-D, Ripane-DSR, Trazol-DSR, PTA-D, Ulcicap-PD, Ultop DSR, Ultoz-D, Wonon-D, Wonon-DSR, and Zovanta-D.
- "Pantoprazole international brand names". Drugs.com. Retrieved 15 March 2017.
- "Pantoprazole Use During Pregnancy". Drugs.com. 26 June 2018. Retrieved 20 February 2020.
- "Pantoprazole 20mg gastro-resistant tablets - Summary of Product Characteristics (SmPC)". (emc). 25 November 2019. Retrieved 20 February 2020.
- "Pantoprazole Sodium Monograph for Professionals - Drugs.com". Drugs.com. American Society of Health-System Pharmacists. Retrieved 28 October 2018.
- British national formulary : BNF 74 (74 ed.). British Medical Association. 2017. p. 79. ISBN 978-0857112989.
- " Comparative effectiveness of proton pump inhibitors". Therapeutics Initiative. 28 June 2016. Retrieved 14 July 2016.
- Richardson P, Hawkey CJ, Stack WA (September 1998). "Proton pump inhibitors. Pharmacology and rationale for use in gastrointestinal disorders". Drugs. 56 (3): 307–35. doi:10.2165/00003495-199856030-00002. PMID 9777309. S2CID 46962618.
- Fischer J, Ganellin CR (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 130. ISBN 9783527607495.
- "The Top 300 of 2020". ClinCalc. Retrieved 11 April 2020.
- "Pantoprazole Sodium - Drug Usage Statistics". ClinCalc. 23 December 2019. Retrieved 11 April 2020.
- "Protonix delayed-release- pantoprazole sodium tablet, delayed release Protonix delayed-release- pantoprazole sodium granule, delayed release". DailyMed. 2 May 2019. Retrieved 20 February 2020.
- Dammann HG, Fölsch UR, Hahn EG, von Kleist DH, Klör HU, Kirchner T, et al. (March 2000). "Eradication of H. pylori with pantoprazole, clarithromycin, and metronidazole in duodenal ulcer patients: a head-to-head comparison between two regimens of different duration". Helicobacter. 5 (1): 41–51. doi:10.1046/j.1523-5378.2000.00006.x. PMID 10672051.
- Herzig SJ, Doughty C, Lahoti S, Marchina S, Sanan N, Feng W, Kumar S (November 2014). "Acid-suppressive medication use in acute stroke and hospital-acquired pneumonia". Annals of Neurology. 76 (5): 712–8. doi:10.1002/ana.24262. PMC 4214881. PMID 25164323.
- Ricketson J, Kimel G, Spence J, Weir R (March 2009). "Acute allergic interstitial nephritis after use of pantoprazole". CMAJ. 180 (5): 535–8. doi:10.1503/cmaj.080456. PMC 2645468. PMID 19255077.
- [Dr. John Cooke, chair of Methodist Hospital's cardiovascular services] [Houston Chronicle Health Zone dated Thursday, July 11, 2013 chron.com/refluxmeds] (Journal: Circulation)
- Center for Drug Evaluation and Research. "Postmarket Drug Safety Information for Patients and Providers - FDA Drug Safety Communication: Possible increased risk of fractures of the hip, wrist, and spine with the use of proton pump inhibitors". U.S. Food and Drug Administration (FDA). Archived from the original on 20 January 2017. Retrieved 3 November 2015.
- Center for Drug Evaluation and Research. "Drug Safety and Availability - FDA Drug Safety Communication: Low magnesium levels can be associated with long-term use of Proton Pump Inhibitor drugs (PPIs)". U.S. Food and Drug Administration (FDA). Retrieved 3 November 2015.
- Wolfe MM, Sachs G (February 2000). "Acid suppression: optimizing therapy for gastroduodenal ulcer healing, gastroesophageal reflux disease, and stress-related erosive syndrome". Gastroenterology. 118 (2 Suppl 1): S9-31. doi:10.1016/s0016-5085(00)70004-7. PMID 10868896.
- Meyer UA (October 1996). "Metabolic interactions of the proton-pump inhibitors lansoprazole, omeprazole and pantoprazole with other drugs". European Journal of Gastroenterology & Hepatology. 8 Suppl 1 (Suppl 1): S21-5. doi:10.1097/00042737-199610001-00005. PMID 8930576.
- Sachs G, Shin JM, Hunt R (December 2010). "Novel approaches to inhibition of gastric acid secretion". Current Gastroenterology Reports. 12 (6): 437–47. doi:10.1007/s11894-010-0149-5. PMC 2974194. PMID 20924727.
- Senn-Bilfinger J, Sturm E (2006). "6. The Development of a New Proton-Pump Inhibitor: The Case History of Pantoprazole". In Fischer J, Ganellin CR (eds.). Analogue-based drug discovery. Weinheim: Wiley-VCH. pp. 115–136. ISBN 9783527608003.
- Daly EM (20 May 2008). "Wyeth, Nycomed Take Aim At Sandoz Over Protonix". Law360.
- Mathews S, Reid A, Tian C, Cai Q (2010). "An update on the use of pantoprazole as a treatment for gastroesophageal reflux disease". Clinical and Experimental Gastroenterology. 3: 11–6. doi:10.2147/ceg.s6355. PMC 3108659. PMID 21694841.
- "Drug Approval Package: Protonix (Pantoprazole Sodium) NDA 20987". U.S. Food and Drug Administration (FDA). 24 December 1999. Retrieved 20 February 2020.
- Goldstein J (30 January 2008). "Generic Protonix and Wyeth as Takeover Bait". WSJ.
- "Takeda to Buy Nycomed for $13.7 Billion". DealBook. 19 May 2011.
- Davis, Alexander (23 January 2009). "Pfizer in talks to acquire Wyeth in $60 billion deal: WSJ". MarketWatch. Retrieved 11 August 2012.
- Saul S (7 September 2007). "Wyeth Faces Generic Rival to a Heartburn Drug". The New York Times.
- Curtiss FR (April 2008). "Perspectives on the "generic cliff"--pushing and falling". Journal of Managed Care Pharmacy. 14 (3): 318–21. doi:10.18553/jmcp.2008.14.3.318. PMID 18439056.
- "Protonix - Big Patent Expirations of 2010". FiercePharma. Retrieved 15 March 2017.
- Helfand C (12 June 2013). "Teva loses $2B gamble on generic of Pfizer's Protonix". FiercePharma.
- Smith, G.W.; Davis, J.L.; Smith, S.M.; Gerard, M.P.; Campbell, N.B.; Foster, D.M. (July 2010). "Efficacy and Pharmacokinetics of Pantoprazole in Alpacas". Journal of Veterinary Internal Medicine. 24 (4): 949–955. doi:10.1111/j.1939-1676.2010.0508.x. PMID 20384953.
- Smith, Joseph S.; Kosusnik, Austin R.; Mochel, Jonathan P. (2020). "A Retrospective Clinical Investigation of the Safety and Adverse Effects of Pantoprazole in Hospitalized Ruminants". Frontiers in Veterinary Science. 7: 97. doi:10.3389/fvets.2020.00097. PMC 7089877. PMID 32258063.
- "Pantoprazole". Drug Information Portal. U.S. National Library of Medicine.