Pantoprazole

Last updated

Pantoprazole
Pantoprazole.svg
Clinical data
Trade names Protonix, others [1]
AHFS/Drugs.com Monograph
MedlinePlus a601246
License data
Pregnancy
category
Routes of
administration 		By mouth and intravenous
Drug class Proton-pump inhibitor
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)/ S2
  • UK: POM (Prescription only) [3]
  • US: WARNING [4] Rx-only
  • EU:Rx-only
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Bioavailability 77%
Protein binding 98%
Metabolism Liver (CYP2C19, CYP3A4)
Elimination half-life 1-2 hours
Excretion Urine, 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 InfoCard 100.111.005 OOjs UI icon edit-ltr-progressive.svg
Chemical and physical data
Formula C16H15F2N3O4S
Molar mass 383.37 g·mol−1
3D model (JSmol)
Chirality Racemic
  • 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) Yes check.svgY
  • Key:IQPSEEYGBUAQFF-UHFFFAOYSA-N Yes check.svgY
   (verify)

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. [5] [6] It may also be used along with other medications to eliminate Helicobacter pylori . [7] Pantoprazole is a proton-pump inhibitor (PPI) and its effectiveness is similar to that of other PPIs. [8] It is available by mouth and by injection into a vein. [5]

Contents

Common side effects include headaches, diarrhea, abdominal pain, and joint pain. [5] [6] More serious side effects may include severe allergic reactions, a type of chronic inflammation known as atrophic gastritis, Clostridioides difficile colitis, low magnesium, and vitamin B12 deficiency. [5] Use in pregnancy appears to be safe. [5] Pantoprazole is a proton pump inhibitor that decreases gastric acid secretion. [5] It works by inactivating (H+/K+)-ATPase function in the stomach. [9] [5]

The study of pantoprazole began in 1985, and it came into medical use in Germany in 1994. [10] It is available as a generic medication. [5] [11] In 2022, it was the sixteenth most commonly prescribed medication in the United States, with more than 30 million prescriptions. [12] [13] In Australia, it was one of the top 10 most prescribed medications between 2017 and 2023. [14]

Medical uses

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. [15] 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. [15] Pantoprazole may also be used in combination with antibiotics to treat ulcers caused by Helicobacter pylori . [16] It can also be used for long-term treatment of Zollinger-Ellison syndrome. [15] It may be used to prevent gastric ulcers in those taking NSAIDs. [7]

For improved efficacy of pantoprazole, the oral tablet formulation is taken half an hour prior to ingestion of food. [6] In the hospital, intravenous administration is indicated when patients are unable to take the medication by mouth. [17]

Children

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. [15]

Adverse effects

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. [18]

Elderly

The incidence of adverse effects occurring in people aged 65 years and older was similar to that in people aged 65 years and less. [15]

Pregnancy

In reproductive studies using doses largely greater than the recommended doses performed on rats and rabbits, there was no evident harm on the development of the baby. [15] [2]

Breast feeding

Pantoprazole has been found to pass through the breast milk. Additionally, 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. [15] [2]

Common

Rare

Long-term use

Discontinuation

In people taking PPIs for longer than six months, a dose taper is recommended prior to discontinuation. [25]

Interactions

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. [15] [6] Additional medications that are affected include bisphosphonate derivatives, fluconazole, clopidogrel, and methotrexate. [6]

Pharmacology

Wyeth pantoprazole 20 mg (Protonix(r)) Pantoprazole 20mg.jpg
Wyeth pantoprazole 20 mg (Protonix®)
Vial of generic pantoprazole for IV administration PantoIV.jpg
Vial of generic pantoprazole for IV administration

The mechanism of action of pantoprazole is to inhibit the final step in gastric acid production. [15] 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. [15] The covalent binding prevents acid secretion for up to 24 hours and longer. [15]

Pantoprazole is metabolized in the liver by the cytochrome P450 system. [26] 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. [9] The drug's plasma half-life is about two hours. [27] After administration, the time for the drug to reach peak plasma concentrations is 2 to 3 hours. [17] The percentage of the drug that is protein bound is 98%. [17]

History

Pantoprazole was discovered by scientists at Byk Gulden, a subsidiary of Altana; the drug discovery program started in 1980, producing pantoprazole in 1985. The compound was actually created by chemists working to scale up a different chemical that had been chosen as a development candidate. [28] : 117, 129  Byk Gulden partnered with Smith Kline & French in 1984. [28] : 124  The compound's development names were BY1029 and SK&F96022. [28] : 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. [28] : 130  It was first marketed in Germany in 1994. [28] : 130  Wyeth licensed the US patent from Altana, [29] and obtained marketing approval from the US FDA in 2000 under the trade name Protonix. [30] [31]

In 2004, worldwide sales of the drug were $3.65 billion, about half of which were in the US. [29]

In 2007, Altana's drug business was acquired by Nycomed. [32] Nycomed was in turn acquired by Takeda in 2011 [33] and Wyeth was acquired by Pfizer in 2009. [34]

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. [35] [36] Wyeth launched an authorized generic in 2008. [32] 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. [37] 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. [38]

Society and culture

As of 2017, 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. [1]

List of brand names

As of 2017, 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, 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, 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. [1]

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. [1]

It was marketed in combination with itopride under the brand names Ganaton Total, Kurepan-IT, Nupenta-ITR, P-Bit-ISR, Pepnil-ITO, Prolus-ISR, and Protopan-I. [1]

It was marketed in combination with clarithromycin and amoxicillin as Gastrocomb, Klacid Hp7, Panclamox, and ZacPac. [1]

It was marketed in combination with levosulpiride as Panlife-LS and in combination with naproxen as Arthopan. [1]

Veterinary use

In veterinary medicine, pantoprazole appears to be safe to use in several large animal species. [39] The pharmacokinetics of pantoprazole have been explored in several veterinary species, including calves, alpacas and foals with half lives reported as 2.81, 0.47, and 1.43 hours, respectively. [40] [41] [42] Pantoprazole appears to be eliminated more quickly in goats when compared to calves, with goats having an elimination half-life of less than one hour. [43]

Pantoprazole has been demonstrated to increase the 3rd compartment pH in alpacas. [42] It has been shown to be generally safe to use in cattle, sheep and goats. [44] The subcutaneous bioavailability is greater than 100% in calves. [45] In calves intravenous and subcutaneous administration has been shown to significantly elevate abomasal pH. [45]

Related Research Articles

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Proton-pump inhibitors (PPIs) are a class of medications that cause a profound and prolonged reduction of stomach acid production. They do so by irreversibly inhibiting the stomach's H+/K+ ATPase proton pump. The body eventually synthesizes new proton pumps to replace the irreversibly inhibited ones, a process driven by normal cellular turnover, which gradually restores acid production.

<span class="mw-page-title-main">Peptic ulcer disease</span> Ulcer of an area of the gastrointestinal tract

Peptic ulcer disease is a break in the inner lining of the stomach, the first part of the small intestine, or sometimes the lower esophagus. An ulcer in the stomach is called a gastric ulcer, while one in the first part of the intestines is a duodenal ulcer. The most common symptoms of a duodenal ulcer are waking at night with upper abdominal pain, and upper abdominal pain that improves with eating. With a gastric ulcer, the pain may worsen with eating. The pain is often described as a burning or dull ache. Other symptoms include belching, vomiting, weight loss, or poor appetite. About a third of older people with peptic ulcers have no symptoms. Complications may include bleeding, perforation, and blockage of the stomach. Bleeding occurs in as many as 15% of cases.

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<span class="mw-page-title-main">Gastroesophageal reflux disease</span> Flow of stomach contents into the esophagus

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<span class="mw-page-title-main">Lansoprazole</span> Stomach acid suppressing medication

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<span class="mw-page-title-main">Dexlansoprazole</span> Stomach acid suppressing medication

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<span class="mw-page-title-main">Ilaprazole</span> Stomach acid suppressing medication

Ilaprazole is a proton pump inhibitor (PPI) used in the treatment of dyspepsia, peptic ulcer disease (PUD), gastroesophageal reflux disease (GORD/GERD) and duodenal ulcer.

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<span class="mw-page-title-main">Azeloprazole</span> Chemical compound

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<span class="mw-page-title-main">Acid peptic diseases</span> Overview of the acid peptic diseases of the stomach and gastrointestinal tract

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