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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that suppresses gastric acid secretion.
## Primary Indications
* Healing of erosive esophagitis associated with gastroesophageal reflux disease (GERD).
* Maintenance of healing of erosive esophagitis.
* Pathological hypersecretory conditions, including Zollinger-Ellison syndrome (ZES).
## Adult Dosing
* **Erosive Esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks. A subsequent 8-week course may be indicated for patients with incomplete healing.
* **Maintenance of Healing of Erosive Esophagitis:** 40 mg orally once daily.
* **Pathological Hypersecretory Conditions (including ZES):** 40 mg orally or intravenously twice daily. Doses may be increased as clinically warranted. Doses up to 240 mg IV daily have been administered.
## Pediatric Dosing
* **Erosive Esophagitis (1-11 years):**
* Body weight < 40 kg: 20 mg orally once daily for up to 8 weeks.
* Body weight ≥ 40 kg: 40 mg orally once daily for up to 8 weeks.
* **Erosive Esophagitis (12-16 years):** 40 mg orally once daily for up to 8 weeks.
* **Maintenance of Healing of Erosive Esophagitis (1-16 years):** 40 mg orally once daily.
* **Pathological Hypersecretory Conditions (1-16 years):** 40 mg orally or intravenously twice daily. Doses may be increased as clinically warranted.
## Dose Adjustments
No dose adjustment is typically required for hepatic or renal impairment.
## Contraindications
Known hypersensitivity to pantoprazole or any of its formulation components.
## Adverse Effects
Common adverse effects include headache, diarrhea, nausea, abdominal pain, and dizziness. Long-term use of PPIs may be associated with an increased risk of *Clostridium difficile*-associated diarrhea, bone fractures (hip, wrist, spine), and vitamin B12 deficiency.
## Key Drug Interactions
* **Warfarin:** Increased INR and prothrombin time. Monitor INR closely.
* **Methotrexate:** May increase and prolong serum levels of methotrexate, potentially leading to toxicity. Consider PPI discontinuation.
* **Drugs Dependent on Gastric pH for Absorption:** Such as ketoconazole, itraconazole, and certain antiretrovirals (e.g., atazanavir, nelfinavir). Pantoprazole can decrease absorption.
## Monitoring
* Monitor for signs and symptoms of *Clostridium difficile*-associated diarrhea.
* Consider monitoring bone mineral density in patients at risk for osteoporosis.
* Consider monitoring vitamin B12 levels in patients on long-term therapy.
## Clinical Pearls
* Oral pantoprazole should generally be taken at least 30 minutes before a meal.
* For IV administration, reconstitute and dilute according to manufacturer instructions. Do not administer via IV push or bolus.
* The 20 mg oral dosage form is available for pediatric use.
*This information is intended for healthcare professionals. Always consult the current prescribing information and institutional protocols for complete details.*
