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# Pantoprazole ## Overview Pantoprazole is a proton pump inhibitor (PPI) that suppresses gastric acid secretion. ## Primary Indications * Healing of erosive esophagitis associated with gastroesophageal reflux disease (GERD). * Maintenance of healing of erosive esophagitis. * 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 erosive esophagitis:** 40 mg orally once daily. Some patients may be treated with 20 mg orally once daily. * **Pathological hypersecretory conditions:** Initially 40 mg orally or intravenously twice daily. Doses may be adjusted based on clinical response. Doses up to 240 mg daily have been administered intravenously. ## Pediatric Dosing * **Erosive esophagitis (1-5 years):** 10 mg orally once daily for up to 8 weeks. * **Erosive esophagitis (5-16 years):** 20 mg orally once daily for up to 8 weeks. * **Erosive esophagitis (>16 years):** 40 mg orally once daily for up to 8 weeks. * **Maintenance of healing erosive esophagitis (5-16 years):** 20 mg orally once daily. * **Maintenance of healing erosive esophagitis (>16 years):** 40 mg orally once daily. *Note: Pediatric dosing is based on age and diagnosis. Consult specific guidelines for full details.* ## Dose Adjustments No dose adjustment is required for renal impairment. In severe hepatic impairment, the recommended dose is 20 mg orally once daily. ## Contraindications Known hypersensitivity to pantoprazole or any component of the formulation. ## Adverse Effects Common: Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence. Serious: Clostridium difficile-associated diarrhea, bone fractures (hip, wrist, spine), hypomagnesemia, vitamin B12 deficiency, systemic lupus erythematosus. ## Key Drug Interactions * **Drugs requiring gastric acid for absorption:** Clopidogrel, ketoconazole, itraconazole, certain HIV protease inhibitors. Pantoprazole can decrease their absorption. * **Methotrexate:** PPIs may increase methotrexate levels. ## Monitoring * Monitor for signs and symptoms of C. difficile infection. * Consider monitoring serum magnesium levels, especially with prolonged use (>1 year) or concurrent diuretic use. * Monitor bone mineral density in patients at risk for osteoporosis. * Assess for signs of vitamin B12 deficiency with prolonged therapy. ## Clinical Pearls * Administer pantoprazole orally 30 minutes before a meal. * For IV administration, reconstitute and dilute according to manufacturer instructions. * Long-term use of PPIs is associated with increased risk of fractures, hypomagnesemia, and C. difficile infection. Use the lowest effective dose for the shortest duration necessary. * Ensure patients are aware of potential symptoms of hypomagnesemia (e.g., tremors, muscle cramps, seizures). *** **Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and relevant guidelines for complete drug details and to verify dosages and recommendations.