Pantoprazole Gen (Pantoprazole Sodium Sesquihydrate)

Pantoprazole Gen is a proton pump inhibitor that acts on the gastric acid secretion pathway. It is indicated for several acid‑related conditions:

• Gastro‑oesophageal reflux disease (GERD): provides symptomatic relief and promotes healing of the oesophageal lining.
• Erosive oesophagitis: heals erosive lesions and prevents further damage.
• Peptic ulcer disease: supports ulcer healing and reduces recurrence risk.
• Zollinger‑Ellison syndrome: controls excessive gastric acid production.
• Helicobacter pylori eradication regimens (as adjunct): enhances ulcer‑healing when combined with antibiotics.

• Pantoprazole selectively inhibits the H+/K+‑ATPase enzyme (the gastric proton pump) located on the secretory surface of parietal cells. By binding covalently to the pump in its active state, it blocks the final step of acid secretion, leading to a sustained increase in gastric pH and reduced acidity in the stomach.

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

Common Side Effects

• Headache: mild to moderate intensity.
• Diarrhoea: usually self‑limiting.
• Nausea or vomiting: transient gastrointestinal upset.
• Abdominal pain or flatulence: mild discomfort.
• Constipation: occasional bowel habit change.
• Dry mouth: reduced salivary flow.

Serious or Rare Side Effects

• Severe allergic reaction (anaphylaxis): rash, swelling, airway compromise.
• Clostridioides difficile infection: persistent watery diarrhoea.
• Acute interstitial nephritis: renal function impairment.
• Low magnesium levels (hypomagnesemia): muscle cramps, arrhythmia risk.
• Bone fracture risk with long‑term use: especially in elderly patients.

Before initiating therapy, consider patient‑specific factors and monitor appropriately.

• Renal impairment: dose adjustment may be required.
• Hepatic impairment: use with caution in severe liver disease.
• Elderly patients: monitor for electrolyte disturbances.
• Concomitant use with drugs that require gastric acidity: assess efficacy.
• Pregnancy and lactation: only if clearly needed after risk‑benefit evaluation.
• Store at below 25°C: keep in the original container, protect from moisture and direct sunlight.

Pantoprazole can affect the absorption or metabolism of several medicines. Review the following interaction categories.

Major Interactions (Avoid)

• Atazanavir or other protease inhibitors: markedly reduced antiviral exposure.
• Methotrexate (high dose): increased systemic levels and toxicity.

Moderate Interactions (Monitor Closely)

• Clopidogrel: reduced antiplatelet effect.
• Warfarin: potential alteration of INR; monitor coagulation.
• Digoxin: possible increase in serum concentration.
• Oral antifungal agents (e.g., ketoconazole, itraconazole): decreased absorption.
• Vitamin B12 supplementation: reduced absorption with long‑term use.