K-Free Powder Sachet contains Calcium Polystyrene Sulphonate 15gm, an ion-exchange resin used primarily for the treatment of hyperkalemia, a condition characterized by elevated serum potassium levels. The active ingredient functions by exchanging calcium ions for potassium ions in the gastrointestinal tract, thereby facilitating the removal of excess potassium through fecal excretion. This mechanism helps to restore and maintain normal potassium balance, which is critical for proper cardiac and neuromuscular function. K-Free Powder Sachet is indicated for patients with hyperkalemia resulting from conditions such as chronic kidney disease, acute kidney injury, or other disorders causing impaired potassium excretion. The powder formulation is intended for oral administration after reconstitution with water, allowing for ease of dosing and improved patient compliance. It is important to monitor serum electrolytes regularly during treatment to avoid hypokalemia or other electrolyte imbalances. Contraindications include patients with hypocalcemia, gastrointestinal obstruction, or known hypersensitivity to calcium polystyrene sulphonate. Adverse effects may include gastrointestinal disturbances such as constipation, nausea, or abdominal discomfort. K-Free Powder Sachet should be used under medical supervision, with dosage adjustments based on clinical response and laboratory findings to ensure safe and effective management of hyperkalemia.