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A small needle goes into the fatty layer under the skin

Here's how to perform a subcutaneous B12 injection: Syringe Loading and Preparation of Injection Site: Prepare the site for injection by cleaning it with an alcohol swab and allowing it to fully dry before injecting

Lab grade is the preferred standard for peer-reviewed research and publication-quality work

According to StatPearls (NCBI Bookshelf), the most common adverse effect of intramuscular vitamin B12 injections is significant pain at the injection site, which is particularly noted in thinner individuals

There is no harm in taking large amounts of B12 as the body only uses what it needs and naturally expels any excess

Theyre experimental substances that have shown promise in animal studies but have never undergone proper human trials