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## Pantoprazole
### Overview
Pantoprazole is a proton pump inhibitor (PPI) that suppresses gastric acid secretion.
### 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 consider 20 mg orally once daily for long-term therapy.
* **Pathological Hypersecretory Conditions:** Starting dose 40 mg orally or intravenously twice daily. Doses adjusted as needed. Doses up to 240 mg daily have been administered intravenously.
### Pediatric Dosing
* **Erosive Esophagitis (Age 5 to 11 years):** 20 mg orally once daily for 4 to 8 weeks.
* **Erosive Esophagitis (Age 12 to 17 years):** 40 mg orally once daily for up to 8 weeks.
* **Note:** Dosing for pediatric patients with pathological hypersecretory conditions is not established.
### Dose Adjustments
No dose adjustment is typically required for hepatic or renal impairment.
### Contraindications
Known hypersensitivity to pantoprazole or any component of the formulation.
### Adverse Effects
Common: Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence.
### Key Drug Interactions
* **Drugs dependent on gastric pH for absorption:** Ketoconazole, itraconazole, iron salts, vitamin B12. Pantoprazole may decrease their absorption.
* **Methotrexate:** PPIs may increase serum levels of methotrexate.
* **CYP2C19 substrates:** Monitor for potential interactions.
### Monitoring
* Monitor for symptom relief.
* Long-term PPI use may be associated with an increased risk of *Clostridium difficile*-associated diarrhea, bone fractures, hypomagnesemia, and vitamin B12 deficiency. Consider periodic evaluation of magnesium levels and vitamin B12 status in patients on long-term therapy.
### Clinical Pearls
* Oral pantoprazole is generally preferred over intravenous administration when clinically appropriate.
* For oral administration, swallow delayed-release tablets whole. Do not crush or chew.
* If administering orally via NG tube, the granules from delayed-release oral suspension packets can be mixed with 10 mL of apple juice or orange juice and then administered via the NG tube. Rinse the tube afterward.
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*Disclaimer: This information is intended for healthcare professionals. Always consult the current prescribing information and relevant literature before making clinical decisions.*
