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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
* Gastroesophageal reflux disease (GERD) - symptomatic relief and healing of erosive esophagitis
* Healing of duodenal ulcers
* Maintenance of healing of erosive esophagitis
* Pathological hypersecretory conditions, such as Zollinger-Ellison syndrome
## Adult Dosing
* **GERD/Erosive Esophagitis:** 40 mg orally once daily for up to 8 weeks. For maintenance of healing, 40 mg orally once daily.
* **Duodenal Ulcers:** 40 mg orally once daily for up to 4 weeks.
* **Pathological Hypersecretory Conditions:** Starting dose is typically 40 mg orally twice daily, may be increased as needed. Doses up to 240 mg daily have been administered.
## Pediatric Dosing
* **GERD (Erosive Esophagitis):**
* 1 year to less than 5 years: 10 mg orally once daily for up to 8 weeks.
* 5 years to less than 17 years: 20 mg orally once daily for up to 8 weeks.
* **GERD (Symptomatic):**
* 5 years to less than 17 years: 20 mg orally once daily.
Dosing for younger children or for indications other than GERD in pediatrics is not well established and requires careful consideration.
## Dose Adjustments
No dose adjustment is typically needed for hepatic or renal impairment.
## Contraindications
* Known hypersensitivity to pantoprazole or any component of the formulation.
* Use of rilpivirine-containing products.
## Adverse Effects
* Common: Headache, diarrhea, nausea, abdominal pain, flatulence, dizziness.
* Long-term use may be associated with:
* Increased risk of Clostridium difficile-associated diarrhea.
* Bone fractures (hip, wrist, spine).
* Vitamin B12 deficiency.
* Hypomagnesemia.
* Acute interstitial nephritis.
## Key Drug Interactions
* **Clopidogrel:** Pantoprazole may decrease the antiplatelet effect of clopidogrel. Consider alternatives if possible.
* **Drugs dependent on gastric pH for absorption:** PPIs can alter gastric pH, affecting the absorption of drugs like ketoconazole, itraconazole, iron salts, and certain HIV medications (e.g., rilpivirine, atazanavir, nelfinavir).
* **Methotrexate:** PPIs may increase methotrexate levels, potentially leading to toxicity.
## Monitoring
* Monitor for signs and symptoms of C. difficile infection.
* Consider serum magnesium levels, especially with prolonged use or concurrent diuretic use.
* Monitor for signs of bone fracture, B12 deficiency, and renal impairment.
## Clinical Pearls
* Administer 30 minutes to 1 hour before a meal.
* Pantoprazole delayed-release tablets and orally disintegrating tablets should not be crushed or chewed.
* IV formulations are available for patients unable to take oral medications.
* Long-term PPI use should be re-evaluated regularly for ongoing need and lowest effective dose.
**Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and relevant clinical guidelines for definitive guidance, as recommendations can vary.
