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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that suppresses gastric acid secretion.
## Primary Indications
* Erosive esophagitis associated with gastroesophageal reflux disease (GERD)
* Healing of erosive esophagitis
* Pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome)
* Maintenance of healing of erosive esophagitis
* Treatment of duodenal ulcers
* Treatment of gastric ulcers
## Adult Dosing
* **Healing of Erosive Esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks.
* **Maintenance of Healing of Erosive Esophagitis:** 40 mg orally once daily. Some patients may be treated with 20 mg orally once daily.
* **GERD (symptomatic):** 20 mg orally once daily for up to 4 weeks.
* **Pathological Hypersecretory Conditions:** 40 mg orally or intravenously once daily, may be increased to a maximum of 80 mg intravenously or orally every 8 hours.
## Pediatric Dosing
* **Erosive Esophagitis (Age 5 to 16 years):** 40 mg orally once daily for up to 8 weeks.
* **GERD (Age 5 to 16 years):** 20 mg orally once daily for up to 4 weeks.
* **Data for children < 5 years is limited.**
## Dose Adjustments
* **Hepatic Impairment:** Maximum dose of 40 mg orally once daily.
## Contraindications
* Known hypersensitivity to pantoprazole or any component of its formulation.
## Adverse Effects
* **Common:** Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence.
* **Serious:** Vitamin B12 deficiency (long-term use), Clostridium difficile-associated diarrhea, bone fractures (long-term use), hypomagnesemia (long-term use).
## Key Drug Interactions
* **Drugs Dependent on Gastric pH for Absorption:** Ketoconazole, itraconazole, posaconazole, iron salts, and cyanocobalamin. Pantoprazole can decrease absorption.
* **Methotrexate:** PPIs may increase methotrexate levels.
* **CYP2C19 Substrates:** Pantoprazole is a moderate inhibitor of CYP2C19. Monitor for effects of drugs metabolized by this enzyme (e.g., clopidogrel).
## Monitoring
* Magnesium levels periodically during long-term therapy.
* Vitamin B12 levels periodically during long-term therapy.
* Bone density screening in patients at risk for osteoporosis.
* Monitor for signs and symptoms of C. difficile infection.
## Clinical Pearls
* Administer pantoprazole delayed-release tablets 30 minutes before a meal.
* For intravenous administration, reconstitute and dilute as per manufacturer instructions.
* Long-term use of PPIs is associated with potential risks; use the lowest effective dose for the shortest duration necessary.
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*This information is intended for healthcare professionals. Always consult the most current prescribing information or a qualified healthcare provider for definitive guidance.*
