Zen Rabiz 20mg Tablet contains Rabeprazole, a proton pump inhibitor (PPI) used primarily to reduce gastric acid secretion. It is indicated for the treatment of gastroesophageal reflux disease (GERD), peptic ulcer disease, Zollinger-Ellison syndrome, and eradication of Helicobacter pylori infection when used in combination with appropriate antibiotics. Rabeprazole acts by selectively inhibiting the H+/K+ ATPase enzyme system at the secretory surface of gastric parietal cells, thereby suppressing the final step of acid production. This leads to a significant and sustained reduction in gastric acidity, promoting ulcer healing and symptom relief. Zen Rabiz 20mg is typically administered orally once daily before meals, with dosage adjustments based on clinical response and specific indications. Common side effects may include headache, diarrhea, nausea, abdominal pain, and dizziness, though it is generally well tolerated. Long-term use requires monitoring for potential risks such as vitamin B12 deficiency, hypomagnesemia, and increased susceptibility to gastrointestinal infections. Caution is advised in patients with hepatic impairment and those on concomitant medications metabolized via the cytochrome P450 system. Zen Rabiz 20mg should be used under medical supervision to ensure optimal therapeutic outcomes and minimize adverse effects.