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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 erosive esophagitis
* Pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome)
* H. pylori eradication (in combination with antibiotics)
## Adult Dosing
* **Healing of erosive esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks.
* **Maintenance of healing of erosive esophagitis:** 40 mg orally once daily.
* **GERD symptom relief:** 20 mg orally once daily.
* **Pathological hypersecretory conditions:** Starting dose 40 mg orally or intravenously twice daily; may be increased to 240 mg/day in divided doses.
* **H. pylori eradication:** 40 mg orally twice daily with clarithromycin and amoxicillin for 7-14 days.
## Pediatric Dosing
* **GERD (erosive esophagitis):**
* **1 to 5 years:** 10 mg orally once daily for up to 8 weeks.
* **5 to 16 years:** 20 mg orally once daily for up to 8 weeks.
* **Note:** IV dosing in pediatric patients is not well established. Use with caution.
## Dose Adjustments
* **Hepatic Impairment:** For oral administration, consider reducing the daily dose to 20 mg once daily. For IV administration, maximum daily dose should not exceed 40 mg.
* **Renal Impairment:** No dose adjustment is generally required.
## Contraindications
* Known hypersensitivity to pantoprazole or any component of the formulation.
* Use of rifampin and St. John's wort may decrease pantoprazole plasma concentrations and efficacy.
## Adverse Effects
* **Common:** Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence.
* **Serious:** Clostridium difficile-associated diarrhea, bone fracture (hip, wrist, spine) with long-term use, hypomagnesemia, vitamin B12 deficiency, potential increased risk of pneumonia.
## Key Drug Interactions
* **Clopidogrel:** Pantoprazole may decrease the efficacy of clopidogrel. Consider alternatives or separate administration times.
* **Methotrexate:** PPIs can increase methotrexate levels.
* **Drugs dependent on gastric pH for absorption:** Ketoconazole, itraconazole, iron salts, digoxin.
* **CYP2C19 substrates:** May affect metabolism of drugs like citalopram, sertraline.
## Monitoring
* Electrolytes (especially magnesium) with prolonged therapy.
* Bone mineral density with long-term use.
* Symptoms of gastrointestinal infections.
## Clinical Pearls
* Administer oral pantoprazole 30 minutes before a meal.
* IV administration should be over at least 15 minutes.
* Long-term PPI use is associated with vitamin B12 deficiency and increased risk of fractures.
* Consider decreasing the dose or discontinuing therapy when clinically appropriate.
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*Disclaimer: This information is for educational purposes only and does not substitute for professional medical advice. Always consult with a qualified healthcare provider to determine the best course of treatment for your specific condition and to ensure the most up-to-date information. Verify current prescribing information before making any treatment decisions.*
