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Intramuscular injection, often abbreviated IM, is the injection of a substance into a muscle. In medicine , it is one of several methods for parenteral administration of medications. Intramuscular injection may be preferred because muscles have larger and more numerous blood vessels than subcutaneous tissue, leading to faster absorption than ...
Intramuscular injections, abbreviated as IM, deliver a substance deep into a muscle, where they are quickly absorbed by the blood vessels into systemic circulation. Common injection sites include the deltoid , vastus lateralis , and ventrogluteal muscles. [ 9 ]
Injection site reactions (ISRs) are reactions that occur at the site of injection of a drug. They may be mild or severe and may or may not require medical intervention. Some reactions may appear immediately after injection, and some may be delayed. [1] Such reactions can occur with subcutaneous, intramuscular, or intravenous administration.
The term injection encompasses intravenous (IV), intramuscular (IM), subcutaneous (SC) and intradermal (ID) administration. [35] Parenteral administration generally acts more rapidly than topical or enteral administration, with onset of action often occurring in 15–30 seconds for IV, 10–20 minutes for IM and 15–30 minutes for SC. [36]
RhIG can be administered by either intramuscular (IM) or intravenous (IV) injection, depending on the preparation. [34] The IM-only preparation should never be administered IV due to the risk of complement system activation. Multiple IM doses should be given at different sites or at different times within the 72-hour window.
In the movie Pulp Fiction, an intracardiac injection of epinephrine is used to treat a heroin overdose (far from the normal medical treatment for this condition, which would be an intravenous or intramuscular injection of naloxone). [4]
If you’ve been using a GLP-1 such as semaglutide, then you’ve likely experienced the powerful effects of this weight loss medication. But what happens when you decide to stop taking semaglutide?
Administration can take place via enteral administration (absorption of the drug through the gastrointestinal tract) [2] or parenteral administration (generally injection, infusion, or implantation). [3] [4] Contrast with topical administration where the effect is generally local. [4]