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# Pantoprazole ## Overview Pantoprazole is a proton pump inhibitor (PPI) that reduces gastric acid production. ## Primary Indications * Healing of erosive esophagitis associated with gastroesophageal reflux disease (GERD) * Maintenance of healing of erosive esophagitis * Treatment of pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome) ## Adult Dosing * **Erosive Esophagitis Healing:** 40 mg orally or intravenously once daily for up to 8 weeks. * **Maintenance of Healing:** 40 mg orally once daily. For some patients, 20 mg orally once daily may be effective. * **Pathological Hypersecretory Conditions:** Starting dose is typically 40 mg orally or intravenously twice daily. Doses can be titrated up to 240 mg daily. ## Pediatric Dosing * **12 years and older:** * **Erosive Esophagitis Healing:** 40 mg orally once daily for up to 8 weeks. * **GERD Symptomatic Relief:** 20 mg orally once daily for up to 4 weeks. * Dosing for pediatric patients younger than 12 years is not well established for all indications and may require specialized consideration. ## Dose Adjustments No dose adjustment is generally required for renal impairment. For hepatic impairment, the maximum daily dose is typically 40 mg orally once daily. ## Contraindications * Known hypersensitivity to pantoprazole or any component of the formulation. ## Adverse Effects Common: Headache, diarrhea, nausea, abdominal pain, dizziness. Less common: Rash, pruritus, fatigue, myalgia. Long-term use may be associated with: Vitamin B12 deficiency, hypomagnesemia, increased risk of fractures (hip, wrist, spine). ## Key Drug Interactions * **Clopidogrel:** Pantoprazole may decrease the antiplatelet effect of clopidogrel. Consider alternative PPIs if concurrent use is necessary. * **Methotrexate:** PPIs can increase methotrexate levels. Monitor for methotrexate toxicity. * **Drugs dependent on gastric pH for absorption:** Pantoprazole can decrease absorption of drugs like ketoconazole, itraconazole, and certain antiretrovirals. ## Monitoring * Monitor for signs and symptoms of hypomagnesemia (e.g., muscle cramps, seizures, arrhythmias) especially with prolonged use (>1 year). * Monitor for signs of vitamin B12 deficiency with prolonged use. * Bone mineral density assessment may be considered in patients at risk for osteoporosis. ## Clinical Pearls * Administer oral pantoprazole 30 minutes to 1 hour before a meal. * Intravenous administration is generally reserved for patients unable to take oral medications. * Consider the potential for drug interactions and long-term adverse effects, especially in elderly patients or those with comorbidities. **Disclaimer:** This information is intended for healthcare professionals and should not be a substitute for clinical judgment. Always verify current prescribing information and consult with a pharmacist for patient-specific advice.