Intravenous (IV) therapy involves administering fluids, medications, or nutrients directly into a vein. It is used for hydration, medication delivery, and blood transfusions, with safety dependent on various factors. Intravenous (IV) therapy involves administering fluids, medications, or nutrients directly into a vein. It is used for hydration, medication delivery, and blood transfusions, with safety dependent on various factors. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle