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## Pantoprazole
### Overview
Pantoprazole is a proton pump inhibitor (PPI) that decreases stomach 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.
* **Pathological Hypersecretory Conditions:** 40 mg orally or intravenously twice daily, with dosage adjustments based on clinical response. Doses up to 240 mg daily have been given.
### Pediatric Dosing
* **GERD (Oral):**
* 1-5 years: 10 mg orally once daily for up to 8 weeks.
* 6-11 years: 20 mg orally once daily for up to 8 weeks.
* 12-17 years: 40 mg orally once daily for up to 8 weeks.
* **Erosive Esophagitis (IV):**
* 5-15 years: 40 mg intravenously once daily for up to 7 days.
* Dosing for children under 1 year is not established.
### Dose Adjustments
* **Hepatic Impairment:** Maximum dose of 20 mg orally once daily for those with severe hepatic impairment. No dose adjustment is typically needed for IV formulations in mild to moderate hepatic impairment, but caution is advised in severe impairment.
### Contraindications
* Known hypersensitivity to pantoprazole or any component of the formulation.
### Adverse Effects
* **Common:** Headache, diarrhea, nausea, abdominal pain, flatulence, dizziness.
* **Serious:** Clostridium difficile-associated diarrhea, bone fracture (hip, wrist, spine), hypomagnesemia, vitamin B12 deficiency, lupus erythematosus cutaneus subacutus, fundic gland polyps.
### Key Drug Interactions
* **Clopidogrel:** Reduced antiplatelet effect. Consider alternative PPIs or close monitoring if concomitant use is necessary.
* **Methotrexate:** Increased methotrexate levels; consider holding pantoprazole if used with high-dose methotrexate.
* **Drugs Dependent on Gastric pH for Absorption:** Ketoconazole, itraconazole, posaconazole, erlotinib, mycophenolate mofetil, and others may have reduced absorption.
### Monitoring
* **Long-term use:** Monitor for signs of vitamin B12 deficiency and hypomagnesemia.
* Monitor bone mineral density in patients at risk for osteoporosis.
* Monitor for signs and symptoms of C. difficile infection.
### Clinical Pearls
* Pantoprazole is often dosed once daily.
* For erosive esophagitis, treatment duration is typically 8 weeks, but may be extended.
* IV formulation can be used for patients unable to take oral medication.
* Oral formulations should be taken at least 1 hour before a meal. Do not crush or chew delayed-release tablets; swallow whole. Delayed-release granules for oral suspension should be mixed with applesauce or pudding and consumed immediately.
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*Disclaimer: This information is intended for educational purposes and does not substitute for professional medical advice. Always consult the most current prescribing information and your healthcare provider for any medical decisions.*
