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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
* Prevention of NSAID-associated gastric ulcers
## Adult Dosing
* **GERD and Erosive Esophagitis:** 40 mg orally once daily. May increase to 40 mg twice daily for severe erosive esophagitis.
* **Healing of Duodenal Ulcers:** 40 mg orally once daily.
* **Prevention of NSAID-associated Gastric Ulcers:** 40 mg orally once daily.
* **Intravenous (IV) Administration:** For patients unable to take oral medication, 40 mg IV once daily.
## Pediatric Dosing
* **GERD (Age 5 to 16 years):** 20 mg orally once daily for up to 8 weeks. For more severe disease, 40 mg orally once daily.
* **Erosive Esophagitis (Age 5 to 16 years):** 40 mg orally once daily for up to 8 weeks.
* **IV Administration (Age 5 to 16 years):** 1.0 mg/kg/day, not to exceed 40 mg/day, for up to 7 days.
*Note: Dosing for younger pediatric patients and specific indications may vary and require specialist consultation.*
## Dose Adjustments
* **Hepatic Impairment:** Maximum dose of 20 mg orally once daily for severe hepatic impairment.
## Contraindications
* Hypersensitivity to pantoprazole or other benzimidazole derivatives.
## Adverse Effects
* Common: Headache, diarrhea, nausea, abdominal pain, flatulence.
* Long-term use concerns: Bone fractures, vitamin B12 deficiency, hypomagnesemia, Clostridium difficile-associated diarrhea.
## Key Drug Interactions
* **Drugs requiring gastric acid for absorption:** Ketoconazole, itraconazole, iron salts, digoxin. Pantoprazole can decrease absorption.
* **Methotrexate:** Pantoprazole may increase methotrexate levels.
* **CYP2C19 substrates/inhibitors:** Potential for altered levels of drugs metabolized by this enzyme.
## Monitoring
* Electrolytes (especially magnesium, calcium, potassium) with prolonged use.
* Vitamin B12 levels with prolonged use.
* Bone mineral density with long-term therapy.
## Clinical Pearls
* Administer oral pantoprazole 30 minutes before a meal.
* Parenteral administration is recommended for patients unable to take oral medications.
* IV formulation should be reconstituted and diluted per manufacturer instructions; stability is limited.
* Consider potential for rebound acid hypersecretion upon abrupt discontinuation. Tapering may be necessary.
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*This information is intended for healthcare professionals. Please consult current prescribing information and local protocols for complete details before making any clinical decisions.*
