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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
* Reduction of risk of NSAID-induced gastric ulcers
* Zollinger-Ellison syndrome
## Adult Dosing
* **GERD/Erosive Esophagitis:** 20 mg to 40 mg once daily for 4 to 8 weeks.
* **Healing of Duodenal Ulcers:** 40 mg once daily for 7 to 10 days.
* **Reduction of NSAID-induced Gastric Ulcers:** 20 mg once daily.
* **Zollinger-Ellison Syndrome:** 40 mg once daily, may be increased to 80 mg daily.
## Pediatric Dosing
* **GERD (oral):**
* 1 to 5 years: 10 mg once daily.
* 5 to 12 years: 20 mg once daily.
* 12 to 16 years: 40 mg once daily.
* **GERD (IV):**
* Children 5 to 12 years: 1.1 mg/kg/day to 1.5 mg/kg/day IV every 12 or 24 hours, not to exceed 40 mg/day.
Dosing for pediatric patients should be based on weight and severity of condition.
## Dose Adjustments
No dose adjustment is typically required for renal impairment. For severe hepatic impairment, consider reducing the dose to 20 mg daily.
## Contraindications
Known hypersensitivity to pantoprazole or any component of the formulation. Use of rilpivirine-containing products.
## Adverse Effects
Common: Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence.
Serious: *Clostridium difficile*-associated diarrhea, bone fractures (hip, wrist, spine) with prolonged use, hypomagnesemia, vitamin B12 deficiency, lupus erythematosus.
## Key Drug Interactions
* **Rilpivirine:** Decreased rilpivirine concentration. Avoid co-administration.
* **Ketoconazole, Itraconazole, Posaconazole:** Decreased absorption of these antifungals.
* **Warfarin:** May increase INR and prothrombin time. Monitor INR closely.
* **Methotrexate:** May increase methotrexate levels. Consider temporarily stopping pantoprazole.
* **Drugs Dependent on Gastric pH:** (e.g., certain HIV protease inhibitors, iron salts) PPIs may alter absorption.
## Monitoring
* Monitor for signs and symptoms of *C. difficile* infection.
* Consider monitoring serum magnesium levels with prolonged therapy (typically >1 year).
* Monitor bone mineral density if indicated.
## Clinical Pearls
* Administer 30 to 60 minutes before a meal for optimal efficacy.
* For IV administration, reconstitute and further dilute according to manufacturer instructions.
* Long-term use of PPIs is associated with increased risk of fractures, *C. difficile* infection, and vitamin B12 deficiency. Use the lowest effective dose for the shortest duration needed.
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**Disclaimer:** This information is intended for clinical use and does not replace professional medical advice. Always verify current prescribing information and local institutional protocols.
