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Step 3: Choose the Injection Site For intramuscular injection , common sites include: Deltoid muscle (upper arm) best for adults with adequate muscle mass Vastus lateralis (side of the thigh) ideal for self-injection Ventrogluteal or dorsogluteal (buttocks) often used in clinical settings Clean the site with an alcohol swab and allow it to dry
See the Research Library, COA guide, and Storage & Handling guide for more
Those getting prescribed injections from their doctor are likely to only need them once every few months at a very high dosage which is not meant to be used weekly or daily
These injections should only be used under medical supervision
B12 Injections are safe and effective for most people
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