Most people know the feeling of getting a shot and having your arm feel sore for several days afterward. Some might even expect it as a side effect. The soreness happens when medications are injected ...

Injections deliver liquid medications, fluids, or nutrients directly into a person’s body. Different types of injections include intravenous, intramuscular, subcutaneous, intraosseous, and intradermal ...

An intramuscular injection delivers medication into a muscle. Doctors frequently use intramuscular injections to administer vaccines and certain other drugs. Injection sites include the upper arm, hip ...