Infusion therapy is a medical treatment that delivers medications, fluids, or nutrients directly into a patient's bloodstream through a vein. This method is often used for patients who cannot take medications by mouth or need a higher concentration of medicine quickly. Common uses include treating conditions like cancer, infections, and dehydration. During infusion therapy, a healthcare professional inserts a small tube called an IV catheter into a vein, usually in the arm. The treatment can take place in a hospital, clinic, or even at home, depending on the patient's needs. This therapy helps ensure that patients receive the right dosage of medication efficiently and effectively.