Intravenous injections are a common medical procedure that involves injecting medication or fluids directly into the veins. There are several different words that can be used as synonyms for this term, including IV injections, intravenous therapy, IV therapy, and IV infusions. All of these terms refer to the same process of delivering medication or other substances directly into the bloodstream through a vein. While intravenous injections may be uncomfortable or stressful for some patients, they are an important tool for doctors and nurses to use when administering medication and fluids to those who need them.