Why do you need an injection in the buttocks?

There are many ways to administer drugs, the slowest is oral, because it needs to be absorbed through the blood vessels of the stomach to achieve the effect of the drug, the fastest is an intravenous injection because it is directly into the bloodstream, is the general drip.

Punching in the buttocks is an intramuscular injection belonging to the role of a time of fast and slow medium, is the drug injected into the muscle so that the small blood vessels in the muscle slowly absorbed slowly occurring effect of the drug, intramuscular injection of common parts of the arm, buttocks, buttocks muscle because of the thicker is not easy to zap the deeper part of the blood vessels, so it is often chosen, and the buttocks around there are many nerves are distributed in order to avoid injuries to the nerves buttocks of the needle are The needle of the buttocks are played in the outer upper 1/4 of the unilateral buttocks.