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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 and maintenance
* Pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome)
* Peptic ulcer disease (duodenal ulcers, gastric ulcers)
* H. pylori eradication (in combination with antibiotics)
## Adult Dosing
* **GERD/Erosive Esophagitis Healing:** 40 mg orally or intravenously once daily for up to 8 weeks.
* **GERD Maintenance:** 20 mg orally once daily. May increase to 40 mg once daily if needed.
* **Pathological Hypersecretory Conditions:** 40 mg orally or intravenously twice daily. Doses may be adjusted upwards as needed. Maximum dose: 80 mg intravenously every 8 hours or 240 mg as a continuous infusion over 24 hours.
* **Peptic Ulcer Disease:** 40 mg orally once daily for up to 4 weeks.
* **H. pylori Eradication:** 40 mg orally twice daily for 7-14 days in combination with specific antibiotics. Specific regimens vary.
## Pediatric Dosing
* **GERD (≥ 5 years):** 20-40 mg orally once daily. Dosing should be individualized based on weight and severity.
* **Erosive Esophagitis (≥ 5 years):** 20-40 mg orally once daily. Dosing should be individualized based on weight and severity.
* **H. pylori Eradication (≥ 12 years):** 40 mg orally twice daily for 7-14 days in combination with specific antibiotics.
## Dose Adjustments
No dose adjustment is typically needed for hepatic or renal impairment, although caution is advised in severe hepatic impairment.
## Contraindications
* Known hypersensitivity to pantoprazole or any component of the formulation.
* Concomitant use with rilpivirine.
## Adverse Effects
* **Common:** Diarrhea, headache, dizziness, abdominal pain, nausea.
* **Serious:** Clostridium difficile-associated diarrhea, bone fractures (hip, wrist, spine) with long-term use, hypomagnesemia, vitamin B12 deficiency, lupus erythematosus.
## Key Drug Interactions
* **Clopidogrel:** Pantoprazole may decrease the antiplatelet effect of clopidogrel. Avoid concomitant use if possible, or monitor closely.
* **Drugs Dependent on Gastric pH:** Absorption of drugs like ketoconazole, itraconazole, and certain HIV protease inhibitors may be reduced.
* **Methotrexate:** PPIs may increase methotrexate levels. Consider holding pantoprazole during methotrexate treatment.
* **Rilpivirine:** Contraindicated due to increased risk of virologic failure.
## Monitoring
* Monitor for signs and symptoms of C. difficile infection.
* Monitor magnesium levels, especially in patients on long-term therapy or taking concomitant diuretics.
* Monitor for signs and symptoms of bone fractures.
* Consider vitamin B12 monitoring in patients with long-term therapy.
## Clinical Pearls
* Oral pantoprazole is most effective when taken 30-60 minutes before a meal.
* Intravenous administration should be over at least 15 minutes.
* Long-term PPI use is associated with increased risks of fractures, C. difficile infection, and hypomagnesemia. Use the lowest effective dose for the shortest duration necessary.
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*Disclaimer: This information is intended for healthcare professionals. Always consult the most current prescribing information and institutional guidelines for definitive drug management.*
