Vitamin IM (Intramuscular) Injection Instructions

Gluteus Medius intramuscular injection site. Precautions

The intramuscular route should not be used in cases where muscle size and condition is not adequate to support sufficient uptake of the vitamin compound.  Intramuscular injections should not be given at a site where there is any indication of pain.


Intramuscular (IM) Injections are given directly to the central area of selected muscles. There are a number of sites on the human body that are suitable for IM injections, however, there are two sites that are most commonly used in this procedure.

Deltoid Muscle

Deltoid muscle intramuscular injection site. The Deltoid muscle is the bulky muscle extending from the shoulder to the upper arm and can be used for intramuscular injections. Please review the diagram for accurate location of the Deltoid muscle, and be sure that the muscle has significant bulk/mass for IM injection.

Gluteus Medius Muscle

The Gluteus Medius muscle is the third commonly used site for IM injections. See diagram for the correct location of injection. Determining which site is most appropriate will depend upon the patient's muscle density at each site, the type and nature of medication you wish to administer and the patient's preferred site for injections.

Injection Technique

Carefully remove the injection supplies that have been provided. Place the correct vial and injection supplies on a clean dry surface.Intramuscular Injection This should include the vial, alcohol prep pads, IM syringe with needle and bandage.  Wash hands and the area to be injected well. Dry hands and injection site with a clean dry cloth. Carefully remove the top of vial, or if using a multiple use vial, wipe the alcohol prep pad to clean the rubber top of the vial. Remove the needle cap. Hold the vial in one hand, and carefully push needle into rubber top. Turn vial upside down and pull syringe plunger until the correct amount of solution is in the syringe (1 ml). Open the second alcohol prep pad, and clean the area to be injected well. Carefully inject the syringe with IM needle into the muscle at a 90 degree angle. Holding the syringe with one hand, gently pull back on the plunger. If no blood enters the syringe, then it is safe to inject the solution. If a flash of blood is seen, then the needle may be in a small vein. Retry positioning in this case. Inject slowly and steadily until desired amount has been given. Remove needle, carefully recap the needle and discard into waste container. Place bandage over injection site.