Pantoprazole Accord Healthcare (Pantoprazole Sodium Sesquihydrate)

Pantoprazole is a proton pump inhibitor that acts on the gastric acid secretion pathway and is used in several acid‑related disorders.

• Gastro‑esophageal reflux disease (GERD): provides symptomatic relief and promotes healing of the esophageal lining.
• Erosive esophagitis: accelerates healing of erosive lesions in the esophagus.
• Zollinger‑Ellison syndrome: controls gastric acid hypersecretion associated with gastrin‑producing tumors.

• Pantoprazole inhibits the H+/K+‑ATPase enzyme (the gastric proton pump) located on the secretory surface of parietal cells in the stomach. By binding covalently to the pump’s cysteine residues, it blocks the final step of acid production, leading to a sustained reduction in gastric acidity and allowing mucosal healing.

Pantoprazole is generally well tolerated, but adverse reactions can occur.

Common Side Effects

• Headache: mild to moderate intensity.
• Diarrhea: usually self‑limiting.
• Nausea: occasional and transient.
• Abdominal pain: mild discomfort.
• Flatulence: excess gas.
• Constipation: infrequent.

Serious or Rare Side Effects

• Clostridioides difficile infection: severe colitis.
• Acute interstitial nephritis: kidney inflammation.
• Severe hypersensitivity reactions: rash, angioedema, anaphylaxis.
• Low magnesium levels (hypomagnesemia): may cause muscle cramps or arrhythmia.
• Osteoporotic fractures: increased risk with long‑term use.
• Liver enzyme elevation: hepatitis or cholestasis.

Before initiating therapy, consider the following safety measures:

• Assess renal function: dose adjustment may be required in severe impairment.
• Review concomitant medications: potential for drug‑drug interactions.
• Monitor electrolytes: especially magnesium during prolonged therapy.
• Evaluate bone health: consider calcium/vitamin D supplementation if long‑term use is anticipated.
• Pregnancy and lactation: use only if clearly needed after risk‑benefit assessment.
• Store at below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Pantoprazole can affect the absorption and metabolism of several co‑administered drugs.

Major Interactions (Avoid)

• Antifungal azoles (ketoconazole, itraconazole): reduced absorption due to increased gastric pH.
• HIV protease inhibitors (atazanavir, nelfinavir): decreased plasma concentrations.
• Clopidogrel: diminished antiplatelet effect.

Moderate Interactions (Monitor Closely)

• Warfarin: potential alteration of INR.
• Methotrexate: increased serum levels, especially at high doses.
• Digoxin: modest increase in serum concentration.
• Oral contraceptives: possible reduction in efficacy.