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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 NSAID-induced gastric ulcers
* H. pylori eradication (in combination with antibiotics)
* Zollinger-Ellison syndrome
## Adult Dosing
* **GERD/Erosive Esophagitis:** 20 mg to 40 mg orally or intravenously once daily. Maximum dose is 40 mg once daily for maintenance therapy. For severe erosive esophagitis, 40 mg once daily may be used.
* **Healing of NSAID-induced ulcers:** 40 mg orally once daily for up to 8 weeks.
* **H. pylori eradication:** 40 mg orally twice daily for 7-14 days in combination with clarithromycin and amoxicillin or clarithromycin and metronidazole.
* **Zollinger-Ellison Syndrome:** 40 mg orally or intravenously once daily, may be increased up to 80 mg intravenously or orally every 8 hours as needed.
## Pediatric Dosing
* **GERD/Erosive Esophagitis:**
* **1-5 years:** 20 mg orally once daily.
* **6-11 years:** 20 mg orally once daily; may increase to 40 mg once daily for up to 8 weeks.
* **12-16 years:** 40 mg orally once daily for up to 8 weeks.
* *Note: IV dosing in pediatric patients is not well-established and should be guided by specialist consultation.*
## Dose Adjustments
* **Hepatic Impairment:** Maximum daily dose is 20 mg orally or 40 mg IV for severe hepatic impairment.
* **Renal Impairment:** No dose adjustment necessary.
## Contraindications
* Known hypersensitivity to pantoprazole, any component of the formulation, or other substituted benzimidazoles.
## 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.
## Key Drug Interactions
* **Drugs requiring gastric acid for absorption:** Ketoconazole, itraconazole, posaconazole, iron salts, and certain protease inhibitors (e.g., atazanavir, nelfinavir). Acid suppression can decrease absorption.
* **Warfarin:** May increase INR and prothrombin time; monitor INR closely.
* **Methotrexate:** PPIs may increase methotrexate levels.
## Monitoring
* **Long-term use:** Monitor for signs of vitamin B12 deficiency and hypomagnesemia.
* **Bone health:** Consider bone mineral density assessment in patients at risk for osteoporosis.
* **C. difficile infection:** Monitor for persistent diarrhea.
## Clinical Pearls
* Pantoprazole is generally administered 30-60 minutes before a meal.
* IV formulation requires reconstitution and further dilution; follow manufacturer instructions.
* Consider the risk of fracture and C. difficile infection with prolonged PPI use.
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**Disclaimer:** This information is intended for healthcare professionals and does not substitute for professional medical advice. Always consult the most current prescribing information and your institution's protocols for definitive guidance.
