Intramuscular injections are given which quadrant of the buttock

The buttocks are the preferred site for administration of the intramuscular injection.  The muscles (gluteal) of this area are thick and are utilized frequently in daily activities, thus causing complete absorption of drugs.  To give the injection at the proper site, the gluteal region can be divided into four quadrant - i) Superomedial (upper inner quadrant) ii) Superolateral (upper outer quadrant) iii) Inferomedial (lower inner quadrant) iv) Inferolateral (lower outer quadrant)  The proper location for an injection is the upper outer quadrant (superolateral) because this is the location where there is least possibility of hitting bone, large blood vessels or the sciatic nerve.