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# Sompraz HP (Rabeprazole) ## Overview Rabeprazole is a proton pump inhibitor (PPI) that suppresses gastric acid secretion. ## Primary Indications * Healing of erosive esophagitis associated with gastroesophageal reflux disease (GERD). * Maintenance of healing of erosive esophagitis. * Symptomatic GERD. * Part of combination therapy for *Helicobacter pylori* eradication. ## Adult Dosing * **Healing of Erosive Esophagitis:** 20 mg once daily for 2 to 4 weeks. * **Maintenance of Healing of Erosive Esophagitis:** 10 mg once daily. * **Symptomatic GERD:** 20 mg once daily for 4 weeks. * ***H. pylori* Eradication:** 20 mg twice daily in combination with two antibiotics (e.g., amoxicillin and clarithromycin) for 7 days. ## Pediatric Dosing Dosing for pediatric patients is not well-established and should be based on specific clinical guidelines and physician judgment. Limited data suggests use in children aged 1 to 11 years for GERD symptoms, with doses ranging from 5 mg to 10 mg daily, but this requires specialist consultation. ## Dose Adjustments * **Hepatic Impairment:** No dose adjustment typically needed, but caution is advised. * **Renal Impairment:** No dose adjustment typically needed. ## Contraindications * Hypersensitivity to rabeprazole, its formulations, or any other PPIs. ## Adverse Effects Common adverse effects include headache, diarrhea, abdominal pain, nausea, vomiting, and flatulence. Long-term PPI use may be associated with an increased risk of fractures (hip, wrist, spine), *Clostridium difficile*-associated diarrhea, vitamin B12 deficiency, and hypomagnesemia. ## Key Drug Interactions * **Ketoconazole, Itraconazole, Erlotinib, Nelfinavir:** Rabeprazole can decrease absorption due to increased gastric pH. * **Methotrexate:** PPIs may increase levels of methotrexate. * **Clopidogrel:** Co-administration may reduce the antiplatelet effect of clopidogrel; however, the clinical significance is debated. Consider alternative agents or separate administration timing if possible. * **Tacrolimus:** Increased serum concentrations of tacrolimus may occur. ## Monitoring * Monitor for signs and symptoms of *Clostridium difficile*-associated diarrhea. * Consider monitoring serum magnesium levels in patients on long-term therapy, especially when taking other medications that may cause hypomagnesemia (e.g., diuretics). * Monitor for signs of bone fracture, particularly in patients with risk factors. ## Clinical Pearls * Administer rabeprazole before a meal, preferably in the morning. * Rabeprazole has a rapid onset of action. * Long-term suppression of gastric acid may lead to vitamin B12 deficiency. *** **Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and relevant clinical guidelines for definitive guidance. This drug information does not replace professional judgment.