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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that decreases the amount of acid produced in the stomach.
## Primary Indications
* Erosive esophagitis associated with gastroesophageal reflux disease (GERD)
* Pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome)
* Maintenance of healing of erosive esophagitis
* Treatment of heartburn associated with GERD
## Adult Dosing
* **Erosive esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks.
* **Maintenance of healing:** 40 mg orally once daily.
* **GERD symptoms:** 20 mg orally once daily for up to 4 weeks.
* **Pathological hypersecretory conditions:** Starting dose is typically 40 mg orally or intravenously twice daily. Doses may be increased as needed. Maximum recommended dose is 240 mg daily.
## Pediatric Dosing
* **1 to 5 years of age:** 10 mg orally once daily for up to 8 weeks for GERD.
* **5 to 16 years of age:**
* **GERD:** 20 mg orally once daily for up to 4 weeks.
* **Erosive esophagitis:** 40 mg orally once daily for up to 8 weeks.
* *Note: Dosing in pediatric patients may vary based on specific indication and clinical judgment. Consult pediatric-specific guidelines.*
## Dose Adjustments
No dose adjustment is generally 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 adverse effects include headache, diarrhea, nausea, abdominal pain, and dizziness. Long-term use may be associated with increased risk of *Clostridium difficile* infection, bone fractures (hip, wrist, spine), vitamin B12 deficiency, and hypomagnesemia.
## Key Drug Interactions
* **Clopidogrel:** Pantoprazole may decrease the efficacy of clopidogrel. Consider alternative PPIs or separate administration times if concomitant use is necessary.
* **Methotrexate:** High-dose PPIs may increase methotrexate levels. Monitor for methotrexate toxicity.
* **Drugs dependent on gastric pH for absorption:** Sucralfate, ketoconazole, itraconazole, and certain antiretrovirals (e.g., atazanavir, nelfinavir) may have reduced absorption.
## Monitoring
* Monitor for signs and symptoms of *C. difficile* infection.
* Monitor electrolytes (magnesium, calcium) with prolonged therapy.
* Consider vitamin B12 levels with prolonged therapy.
* Monitor bone mineral density in patients at risk for osteoporosis.
## Clinical Pearls
* Administer oral pantoprazole 30 to 60 minutes before a meal.
* Do not crush or chew delayed-release tablets; swallow whole.
* For intravenous administration, reconstitute and infuse according to manufacturer instructions.
* Long-term use should be reserved for patients with a clear indication and regularly reassessed for ongoing need.
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**Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and institutional protocols before administering any medication.
