Xylistin Forte Plus 3MIU Injection contains Colistin Sulphate equivalent to 3 million international units (IU) and is indicated for the treatment of serious infections caused by susceptible strains of multidrug-resistant Gram-negative bacteria. Colistin, a polymyxin antibiotic, acts by disrupting the bacterial cell membrane, leading to cell death. This formulation is primarily used in severe infections such as ventilator-associated pneumonia, bloodstream infections, urinary tract infections, and intra-abdominal infections where alternative therapies are ineffective or contraindicated. Xylistin Forte Plus is administered parenterally, typically via intramuscular or intravenous injection, under strict medical supervision. Dosage adjustment may be necessary in patients with renal impairment due to the drug’s nephrotoxic potential. Common adverse effects include nephrotoxicity and neurotoxicity, necessitating regular monitoring of renal function and neurological status during therapy. Hypersensitivity reactions, although rare, may occur. The use of Xylistin Forte Plus should be guided by susceptibility testing to minimize the development of resistance. It is contraindicated in patients with known hypersensitivity to colistin or other polymyxins. This injection should be used cautiously in elderly patients and those with pre-existing renal or neurological conditions. Proper reconstitution and aseptic technique are essential to ensure efficacy and safety.