Intramuscular Injection Sites

Posted by Erez Medical on

Site selection

Four muscle sites are recommended for IM administration (Fig 1, Table 1):

  • Vastus lateralis;
  • Rectus femoris
  • Deltoid;
  • Ventrogluteal.

Intramuscular Recommended Injection Site


Traditionally the dorsogluteal (DG) muscle was used for IM injections but this muscle is in close proximity to a major blood vessel and nerves, with sciatic nerve injury a recognised complication (Small, 2004). In addition, drug absorption from the DG muscle may be slower than other sites and this can lead to a build-up of drugs in the tissues and risk of overdose (Malkin, 2008)

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