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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that decreases the amount of acid produced in the stomach.
## 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)
* H. pylori eradication (in combination with antibiotics)
## Adult Dosing
* **Erosive esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks. A 4-week course may be sufficient for some patients.
* **Maintenance of healing:** 40 mg orally once daily.
* **Pathological hypersecretory conditions:** Starting dose 40 mg orally or intravenously twice daily. Doses can be adjusted upwards based on gastric acid output. Doses up to 240 mg daily have been administered intravenously.
* **H. pylori eradication:** 40 mg orally twice daily for 7-14 days in combination with specific antibiotic regimens (e.g., amoxicillin and clarithromycin, or clarithromycin and metronidazole).
## Pediatric Dosing
* **Erosive esophagitis (age 5 to 16 years):** 20 mg to 40 mg orally once daily.
* **Erosive esophagitis (age < 5 years):** Dosing is not well-established for this age group. Consult specialized pediatric guidelines or consider alternative agents.
## Dose Adjustments
No dose adjustment is generally required for hepatic or renal 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:
* Bone fractures (hip, wrist, spine)
* Clostridium difficile infection
* Vitamin B12 deficiency
* Hypomagnesemia
## Key Drug Interactions
* **Clopidogrel:** Pantoprazole may decrease the antiplatelet effect of clopidogrel. Consider alternative PPIs or separate administration times if concurrent use is necessary.
* **Drugs dependent on gastric pH for absorption:** May affect absorption of drugs such as ketoconazole, itraconazole, iron salts, and vitamin B12.
* **Methotrexate:** PPIs may increase methotrexate levels.
## Monitoring
* Monitor for signs and symptoms of C. difficile-associated diarrhea.
* Monitor serum magnesium levels, especially in patients on long-term therapy or taking concomitant medications that lower magnesium.
* Monitor for signs of bone fracture.
## Clinical Pearls
* Administer oral pantoprazole 30-60 minutes before a meal.
* IV pantoprazole can be given as a continuous infusion or bolus injection. Reconstitution and dilution instructions vary; consult specific product information.
* For H. pylori eradication, ensure complete adherence to the full antibiotic regimen.
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*Disclaimer: This information is intended for healthcare professionals. Always verify the most current prescribing information and institutional protocols before initiating or adjusting drug therapy.*
