Faxicad 400 Tablet contains Rifaximin 400mg, a broad-spectrum antibiotic primarily used to treat gastrointestinal infections caused by susceptible bacteria. It is effective in managing conditions such as traveler’s diarrhea, irritable bowel syndrome with diarrhea (IBS-D), and hepatic encephalopathy by reducing the growth of harmful bacteria in the intestines. Rifaximin works by inhibiting bacterial RNA synthesis, thereby preventing bacterial replication and promoting the elimination of infection. Due to its minimal systemic absorption, Faxicad 400 acts locally within the gut, reducing the risk of systemic side effects. This makes it a preferred choice for treating infections localized to the gastrointestinal tract. The tablet is usually administered orally, with dosage and duration depending on the specific condition being treated and the patient’s clinical response. Common side effects may include nausea, abdominal pain, and headache, though it is generally well tolerated. It is important to complete the full prescribed course to prevent the development of antibiotic resistance. Faxicad 400 should be used under medical supervision, especially in patients with liver impairment or hypersensitivity to rifamycin derivatives. It is not recommended for systemic infections or in patients with severe hepatic dysfunction without proper consultation.