The disadvantage of administering the medication via the subcutaneous or the intramuscular route is redness, swelling, or the warmth at the injection site. the drainage at the injection site. prolonged bleeding. the signs of an allergic reaction, such as the difficulty breathing or the facial swelling.
An intramuscular injection is the technique used to deliver the medication as deep into the muscles. This allows the medication to be absorbed into the bloodstream so quickly. The primary sites used for the im injections are the gluteal , the deltoid (upper arm), and the vastus lateralis (lateral thigh) muscles. The rate of the drug absorption and the peak drug levels are obtained will often differ between sites and used for im injections. This is called related to the differences in blood flow and among the muscle groups.
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