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# Pantoprazole
## Overview
Pantoprazole is a proton pump inhibitor (PPI) that decreases acid production in the stomach.
## Primary Indications
* Gastroesophageal reflux disease (GERD) - erosive esophagitis
* GERD - maintenance of healing of erosive esophagitis
* Pathological hypersecretory conditions, such as Zollinger-Ellison syndrome
## Adult Dosing
* **Erosive Esophagitis:** 40 mg orally or intravenously once daily for up to 8 weeks.
* **Maintenance of Healing:** 40 mg orally once daily. May be given 20 mg orally once daily.
* **Pathological Hypersecretory Conditions:** Start with 40 mg orally or intravenously twice daily. Doses may be increased as needed. Doses up to 240 mg intravenously daily have been administered.
## Pediatric Dosing
* **Erosive Esophagitis (1 month to <17 years):** 1.25 mg/kg orally once daily, not to exceed 40 mg/day. Some sources suggest 0.6 mg/kg to 1.2 mg/kg orally once daily.
* **GERD (5 years to <17 years):** 20 mg orally once daily. For more severe cases, 40 mg orally once daily.
*Note: Pediatric dosing can vary significantly based on age, weight, and indication. Consult specific pediatric guidelines.*
## Dose Adjustments
* **Hepatic Impairment:** Maximum dose is 40 mg orally once daily.
* **Renal Impairment:** No dose adjustment needed.
## Contraindications
* Known hypersensitivity to pantoprazole or any component of the formulation.
## Adverse Effects
* Common: Headache, diarrhea, nausea, abdominal pain, dizziness, flatulence.
* Serious: *Clostridium difficile*-associated diarrhea, bone fracture (hip, wrist, spine), hypomagnesemia, vitamin B12 deficiency, systemic lupus erythematosus, fundic gland polyps.
## Key Drug Interactions
* **Drugs affected by gastric pH:** Antiretroviral agents (e.g., atazanavir, nelfinavir), antifungals (e.g., ketoconazole, itraconazole), certain tyrosine kinase inhibitors.
* **CYP2C19 substrates:** Warfarin, clopidogrel (use with caution, though clinical significance is debated).
## Monitoring
* Monitor for signs and symptoms of hypomagnesemia (e.g., tremor, seizures, cardiac arrhythmias).
* Monitor for signs and symptoms of vitamin B12 deficiency with long-term therapy.
* Consider bone density screening in patients at risk for osteoporosis.
* Monitor for diarrhea, especially *C. difficile*-associated diarrhea.
## Clinical Pearls
* Administer pantoprazole oral suspension with or without food.
* Intravenous formulation should be administered over at least 15 minutes.
* Long-term PPI use may increase the risk of fractures, *C. difficile* infection, and vitamin B12 deficiency. Consider the shortest effective duration of treatment.
* Pantoprazole may mask symptoms of malignancy in patients with gastric ulcers.
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**Disclaimer:** This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always verify current prescribing information and consult with a qualified healthcare provider before making any treatment decisions.
