Most people are familiar with IV. If you or a loved one has ever been in the hospital, you have probably experienced IV up close as well. You have seen the pole attached to a bag, which is distributing some kind of liquid in the patient’s body. But very few people know what IV really is and how it works. If you have ever had questions about IV or IV therapy, you are not alone.

In medical terms, intravenous – or IV, in short – refers to the administration of substances into the body through a vein or vein. Therefore IV therapy works by directly passing fluid to your veins. There are two primary methods of IV therapy:

The injection works by using a syringe to force a liquid into the body. IV injection is the fastest delivery method of all injection types (below), and gives the fastest results. In addition to being given intravenously, injections may also be given by various routes, such as: