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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that reduces gastric acid production.
## Primary Indications
* Healing of erosive esophagitis associated with gastroesophageal reflux disease (GERD).
* Maintenance of healing of erosive esophagitis.
* Treatment of pathological hypersecretory conditions, including Zollinger-Ellison syndrome.
## Adult Dosing
* **Erosive Esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks.
* **Maintenance of Healing:** 40 mg orally once daily. May be given 20 mg orally once daily for some patients.
* **Pathological Hypersecretory Conditions:** 40 mg orally or intravenously twice daily, adjusted as needed. Doses as high as 240 mg daily have been administered.
## Pediatric Dosing
Dosing for pediatric patients varies by indication and age. Always consult specific pediatric guidelines.
* **Erosive Esophagitis (ages 5-15 years):** 20 mg or 40 mg orally once daily, depending on body weight.
* **GERD Symptoms (ages 5-15 years):** 20 mg orally once daily.
## Dose Adjustments
No dose adjustment is typically required for hepatic or renal impairment, although caution is advised in severe hepatic impairment.
## Contraindications
* Known hypersensitivity to pantoprazole or any component of the formulation.
* Concomitant use with rilpivirine.
## Adverse Effects
Common adverse effects include diarrhea, headache, dizziness, and abdominal pain. Long-term use may be associated with an increased risk of fractures, C. difficile infection, hypomagnesemia, and vitamin B12 deficiency.
## Key Drug Interactions
* **Rilpivirine:** Pantoprazole decreases rilpivirine plasma concentrations; contra-indicated.
* **Warfarin:** May increase INR and prothrombin time; monitor INR closely.
* **Certain Antiretrovirals (e.g., atazanavir, nelfinavir):** Reduced absorption due to increased gastric pH.
* **Methotrexate:** May increase methotrexate levels; consider holding pantoprazole during methotrexate treatment.
* **Drugs Dependent on Gastric pH for Absorption (e.g., ketoconazole, itraconazole, iron salts):** Reduced absorption due to increased gastric pH.
## Monitoring
* Monitor for clinical improvement of GERD symptoms or esophagitis.
* Monitor magnesium levels with prolonged use (>1 year), especially in patients taking diuretics.
* Monitor for signs and symptoms of bone fracture.
* Monitor for signs and symptoms of C. difficile infection.
## Clinical Pearls
* Administer pantoprazole delayed-release oral formulations 30 minutes before a meal.
* Intravenous administration can be used when oral route is not feasible.
* Long-term PPI use should be limited to the duration necessary for treatment of the condition.
* Consider the risk of fractures, C. difficile, and hypomagnesemia with prolonged therapy.
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*This information is intended for healthcare professionals. Always consult the most current prescribing information and local protocols for definitive guidance.*
