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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that suppresses gastric acid secretion.
## Primary Indications
* Gastroesophageal reflux disease (GERD)
* Erosive esophagitis
* Healing of Duodenal Ulcers
* *Helicobacter pylori* eradication (in combination with antibiotics)
* Zollinger-Ellison syndrome
## Adult Dosing
* **GERD/Erosive Esophagitis:** 40 mg orally or IV once daily. Duration is typically 4-8 weeks.
* **Duodenal Ulcers:** 40 mg orally once daily for up to 4 weeks.
* ***H. pylori* Eradication:** 40 mg orally twice daily for 7-14 days in combination with clarithromycin and amoxicillin or metronidazole.
* **Zollinger-Ellison Syndrome:** 40 mg orally or IV once daily, may titrate up to 80 mg IV or orally twice daily.
## Pediatric Dosing
* **GERD/Erosive Esophagitis:**
* **1 month to <5 years:** 1.1-2.2 mg/kg/day orally divided into 2 doses; maximum 20 mg/day.
* **5 to <12 years:** 20 mg orally once daily.
* **≥12 years:** 40 mg orally once daily.
* *Note: IV dosing in pediatrics is less well-established and depends on institutional protocols.*
## Dose Adjustments
* **Hepatic Impairment:** Reduce daily dose to 20 mg orally.
* **Renal Impairment:** No dose adjustment necessary.
## Contraindications
* Known hypersensitivity to pantoprazole, substituted benzimidazoles, or any component of the formulation.
## Adverse Effects
Common: Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence.
Serious: *C. difficile*-associated diarrhea, bone fractures (hip, wrist, spine), hypomagnesemia, vitamin B12 deficiency, fundic gland polyps.
## Key Drug Interactions
* **Drugs requiring gastric acid for absorption:** Ketoconazole, itraconazole, iron salts, mycophenolate mofetil. Separate administration times.
* **Methotrexate:** Pantoprazole may increase methotrexate levels. Monitor for methotrexate toxicity.
* **CYP2C19 substrates:** Consider potential for altered levels of drugs metabolized by CYP2C19 (e.g., clopidogrel, though clinical significance is debated).
## Monitoring
* **Long-term use:** Monitor for signs and symptoms of vitamin B12 deficiency, hypomagnesemia, and bone fracture risk.
* **Infectious diarrhea:** Rule out *C. difficile*-associated diarrhea.
## Clinical Pearls
* For IV administration, reconstitute and dilute prior to infusion. Do not administer as a bolus.
* Oral pantoprazole is generally taken 30-60 minutes before a meal.
* Long-term use of PPIs is associated with increased risk of pneumonia, C. diff infection, and bone fractures.
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*This information is intended for healthcare professionals and does not substitute for comprehensive drug information resources. Always consult the current prescribing information and institutional protocols before making clinical decisions.*
