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## Pantoprazole
### Overview
Pantoprazole is a proton pump inhibitor (PPI) that decreases acid production in the stomach.
### Primary Indications
* Healing of erosive esophagitis associated with gastroesophageal reflux disease (GERD).
* Maintenance of healing of erosive esophagitis.
* Reduction of risk of NSAID-associated gastric ulcers in patients at risk.
* Pathological hypersecretory conditions, including Zollinger-Ellison syndrome.
### Adult Dosing
* **Erosive Esophagitis:** 40 mg orally once daily for up to 8 weeks. For maintenance, 40 mg once daily.
* **NSAID-Associated Gastric Ulcers:** 40 mg orally once daily. Duration typically up to 8 weeks.
* **Zollinger-Ellison Syndrome:** Start with 40 mg orally twice daily. Doses may be increased as needed. Doses up to 240 mg daily have been administered.
### Pediatric Dosing
* **Erosive Esophagitis (5 to 16 years):** 20 mg to 40 mg orally once daily.
* **Erosive Esophagitis (greater than or equal to 16 years):** Same as adult dosing.
### Dose Adjustments
No dose adjustment is typically needed for renal impairment. Use with caution in severe hepatic impairment; a maximum dose of 20 mg daily is recommended for severe hepatic impairment.
### Contraindications
Known hypersensitivity to pantoprazole or any component of the formulation.
### Adverse Effects
Common adverse effects include headache, diarrhea, nausea, abdominal pain, and dizziness. Long-term use of PPIs may be associated with an increased risk of *Clostridium difficile* infection, bone fractures, and vitamin B12 deficiency.
### Key Drug Interactions
* **Warfarin:** Increased INR and bruising. Monitor INR closely.
* **Methotrexate:** Increased methotrexate levels, potentially leading to toxicity. Consider dose reduction or temporary discontinuation of pantoprazole.
* **Drugs dependent on gastric pH for absorption (e.g., ketoconazole, itraconazole, iron salts, mycophenolate mofetil):** Decreased absorption. Separate administration times.
### Monitoring
* Monitor for signs and symptoms of *Clostridium difficile* infection.
* Assess for potential bone fracture risk with long-term use.
* Consider monitoring vitamin B12 levels with prolonged therapy.
### Clinical Pearls
* Administer oral pantoprazole 30 to 60 minutes before a meal.
* Pantoprazole delayed-release tablets should be swallowed whole and not chewed, cut, or crushed.
* For patients unable to swallow tablets, pantoprazole for delayed-release oral suspension can be used.
* IV formulation is available for patients unable to take oral medication.
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**Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and relevant guidelines before making any clinical decisions.
