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## Sompraz (Pantoprazole)
### Overview
Pantoprazole is a proton pump inhibitor (PPI) that reduces gastric acid production.
### Primary Indications
* Gastroesophageal reflux disease (GERD) - healing of erosive esophagitis and maintenance of healing.
* Zollinger-Ellison syndrome and other pathological hypersecretory conditions.
* Healing of duodenal ulcers.
### Adult Dosing
* **Erosive esophagitis healing:** 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 managed on 20 mg orally once daily.
* **GERD (symptomatic):** 20 mg orally once daily. If not controlled after 4 weeks, may be treated for an additional 4 weeks.
* **Duodenal ulcers:** 40 mg orally once daily for 7 days.
* **Zollinger-Ellison syndrome:** Typically 40 mg orally or intravenously twice daily. Doses may be increased as needed. Usual doses range from 40 mg to 240 mg per day. Doses above 160 mg should be administered intravenously every 8 hours.
### Pediatric Dosing
* **GERD (healing of erosive esophagitis):**
* **12 to 16 years:** 40 mg orally once daily for up to 8 weeks.
* **5 to 16 years:** 20 mg orally once daily for up to 8 weeks.
* **1 month to 5 years:** 1 mg/kg/day orally, not to exceed 20 mg once daily, for up to 8 weeks.
* **Note:** Oral formulations are preferred. IV administration in pediatrics is less established and requires careful consideration. Consult specific pediatric guidelines.
### Dose Adjustments
* **Hepatic impairment:** Maximum dose of 40 mg orally once daily.
* **Renal impairment:** No dose adjustment necessary.
### Contraindications
* Known hypersensitivity to pantoprazole, any component of the formulation, or other substituted benzimidazoles.
### Adverse Effects
* **Common:** Diarrhea, headache, dizziness, abdominal pain, nausea, flatulence.
* **Serious:** *Clostridioides difficile*-associated diarrhea (CDAD), bone fractures (hip, wrist, spine), hypomagnesemia, vitamin B12 deficiency, systemic lupus erythematosus (new or exacerbation).
### Key Drug Interactions
* **Drugs dependent on gastric pH for absorption:** May decrease absorption of drugs like ketoconazole, itraconazole, posaconazole, iron salts, and vitamin B12.
* **Methotrexate:** PPIs may increase methotrexate levels, potentially leading to toxicity.
* **CYP2C19 Substrates:** Pantoprazole is a moderate inhibitor of CYP2C19. Use with caution with drugs primarily metabolized by this enzyme (e.g., clopidogrel, diazepam, phenytoin).
### Monitoring
* Monitor for signs and symptoms of *C. difficile* infection.
* Consider serum magnesium levels, especially with prolonged use (>1 year) or concomitant use of other drugs that lower magnesium (e.g., diuretics).
* Monitor for signs of bone fracture.
* Consider vitamin B12 levels with long-term therapy.
### Clinical Pearls
* Administer pantoprazole orally 30 minutes to 1 hour before a meal.
* Delayed-release tablets should be swallowed whole and not chewed or crushed.
* IV administration may be used when oral route is not feasible.
* Long-term PPI use is associated with increased risk of fractures, *C. difficile*, hypomagnesemia, and B12 deficiency. 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 relevant clinical guidelines for complete and up-to-date details before making treatment decisions.*
