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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that decreases stomach acid production.
## Primary Indications
* Erosive esophagitis associated with GERD
* Pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome)
* Healing of duodenal ulcers
* Maintenance of healing of erosive esophagitis and duodenal ulcers
* H. pylori eradication (in combination regimens)
## Adult Dosing
* **Erosive esophagitis:** 40 mg orally or IV once daily for up to 8 weeks. Maintenance therapy: 40 mg orally once daily.
* **Pathological hypersecretory conditions:** Starting dose 40 mg orally or IV twice daily. Doses may be increased to 240 mg/day.
* **Healing of duodenal ulcers:** 40 mg orally once daily for 7 days.
* **H. pylori eradication:** 40 mg orally twice daily for 7-14 days in combination with antibiotics (e.g., clarithromycin and amoxicillin or clarithromycin and metronidazole).
## Pediatric Dosing
Dosing in pediatric patients varies by indication and weight. Consult specific pediatric guidelines for exact dosing.
* **Erosive esophagitis (12 years and older):** 40 mg orally once daily for up to 8 weeks.
* **GERD symptoms (5 years and older):** 20-40 mg orally once daily.
## Dose Adjustments
No dose adjustment is typically needed for renal impairment. Limited data in severe hepatic impairment; a dose reduction to 20 mg daily may be considered.
## Contraindications
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 bone fractures, C. difficile infection, and vitamin B12 deficiency.
## Key Drug Interactions
* **Drugs requiring gastric acid for absorption:** Ketoconazole, itraconazole, iron salts, and vitamin B12. Pantoprazole can decrease absorption.
* **Methotrexate:** Pantoprazole may increase methotrexate levels.
* **CYP2C19 substrates:** Pantoprazole may affect the metabolism of drugs like clopidogrel, though clinical significance is debated.
## Monitoring
* Monitor for signs and symptoms of fracture, C. difficile infection, and B12 deficiency with long-term use.
* Monitor electrolytes (magnesium, calcium, potassium) with prolonged therapy.
## Clinical Pearls
* Administer oral pantoprazole 30-60 minutes before a meal.
* IV formulation should be given as an infusion over 15 minutes.
* For H. pylori eradication, ensure adherence to the full course of antibiotics.
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*This information is intended for healthcare professionals. Always verify current prescribing information and local protocols before making any clinical decisions.*
