Injection is infusion of any kind of fluid into the body. This fluid that is infused is termed as injectable. It can be any fluid preparation like a pharmaceutical product, a drug, a chemical, an organic substance or medicine etc.
There are several methods or routes of infusing injectable like
For almost all the routes, a syringe and a hollow needle is used. The fluid is filled into the syringe and a puncture is made into the target route with the syringe to transfer the fluid.Injections are among the most common health care procedures performed as they give quick response (sometimes in 5-10 seconds) as compared to solid drugs.
That is why they are best when used for injecting specific substances that are required in the specific areas to get desired results