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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that suppresses gastric acid secretion.
## Primary Indications
* Gastroesophageal reflux disease (GERD)
* Erosive esophagitis
* Healing of duodenal ulcers
* Treatment of *Helicobacter pylori* infection (in combination with antibiotics)
* Pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome)
## Adult Dosing
* **GERD/Erosive Esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks. Maintenance therapy: 40 mg orally once daily; some patients may be treated with 20 mg orally once daily.
* **Duodenal Ulcer Healing:** 40 mg orally once daily for up to 4 weeks.
* ***H. pylori* Eradication:** 40 mg orally twice daily for 7 to 14 days in combination with clarithromycin and amoxicillin or metronidazole.
* **Pathological Hypersecretory Conditions:** 40 mg orally or intravenously twice daily. Doses may be titrated up to 240 mg orally or intravenously once daily.
## Pediatric Dosing
Dosing varies significantly by indication and age. Consult specific pediatric guidelines for appropriate dosing.
* **GERD (12 years and older):** 40 mg orally once daily for up to 8 weeks.
* **Erosive Esophagitis (5 years and older):** 20-40 mg orally once daily for up to 8 weeks.
## Dose Adjustments
No dose adjustment is typically needed for hepatic or renal impairment, though caution may be advised in severe hepatic impairment.
## Contraindications
* Known hypersensitivity to pantoprazole or any component of the formulation.
## Adverse Effects
Common: Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence.
Serious: *Clostridium difficile*-associated diarrhea, bone fractures (hip, wrist, spine), hypomagnesemia, vitamin B12 deficiency, lupus erythematosus.
## Key Drug Interactions
* **Drugs requiring gastric acid for absorption:** Ketoconazole, itraconazole, iron salts, mycophenolate mofetil. Pantoprazole can decrease their absorption.
* **CYP2C19 substrates:** Clopidogrel. Pantoprazole may reduce the antiplatelet effect of clopidogrel.
* **Methotrexate:** PPIs may increase methotrexate levels.
## Monitoring
* Monitor for signs and symptoms of *C. difficile*-associated diarrhea.
* Consider monitoring serum magnesium levels in patients on long-term therapy, especially those taking concomitant digoxin or diuretics.
* Consider monitoring vitamin B12 levels in patients on long-term therapy.
* Monitor bone mineral density in patients at risk for osteoporosis.
## Clinical Pearls
* Administer oral pantoprazole at least 30 minutes before a meal.
* Intravenous pantoprazole should be administered as a slow infusion over 15 minutes or as a bolus injection over 2 minutes.
* Long-term PPI use has been associated with increased risk of fractures, *C. difficile* infection, hypomagnesemia, and vitamin B12 deficiency. Consider the lowest effective dose and shortest duration of therapy.
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*This information is intended for healthcare professionals. Always verify current prescribing information and consult with a qualified healthcare provider for specific patient care decisions.*
