Omeprazol Farmamabo (Omeprazole)

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

• Gastro‑oesophageal reflux disease (GERD): provides symptomatic relief and promotes healing of the oesophageal lining.
• Erosive oesophagitis: heals erosive lesions and prevents recurrence.
• Peptic ulcer disease: supports ulcer healing and reduces recurrence risk.
• Zollinger‑Ellison syndrome: controls gastric acid hypersecretion.
• Helicobacter pylori eradication regimens: used as adjunct therapy to improve eradication rates.

• Omeprazole irreversibly binds to the H+/K+‑ATPase enzyme (the gastric proton pump) on the secretory surface of parietal cells, inhibiting the final step of acid secretion. This results in a prolonged reduction of gastric acidity, allowing mucosal healing and symptom control in acid‑related disorders.

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

Common Side Effects

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

Serious or Rare Side Effects

• Clostridioides difficile infection: severe colitis risk.
• Acute interstitial nephritis: kidney inflammation.
• Hypomagnesemia: low serum magnesium levels.
• Stevens‑Johnson syndrome: severe skin reactions.
• Fracture risk: possible reduced bone density with long‑term use.
• Liver enzyme elevation: abnormal hepatic function tests.

When using Omeprazol Farmamabo, consider the following precautions:

• Assess renal function: adjust use in severe renal impairment.
• Monitor magnesium levels: long‑term therapy may lower magnesium.
• Evaluate bone health: prolonged use may affect calcium balance.
• Review concomitant medications: potential for altered absorption of drugs that require acidic pH.
• Pregnancy and lactation: use only if clearly needed.
• Store at ambient temperature: keep in the original container, protect from moisture and light.

Omeprazole may interact with several medicines, requiring attention to the interaction severity.

Major Interactions (Avoid)

• Clopidogrel: reduced antiplatelet effect.
• Atorvastatin: increased plasma concentration.
• Warfarin: potential increase in INR.

Moderate Interactions (Monitor Closely)

• Digoxin: altered absorption may change serum levels.
• Methotrexate: reduced renal clearance can raise toxicity risk.
• Ketoconazole: decreased antifungal absorption.
• Iron supplements: diminished iron uptake.
• Vitamin B12: possible reduction in long‑term absorption.