administer b12 injections at home inject subcutaneously How To Self-Inject B12 -

B12 shots are injected intramuscularly, which means they dont have to go through the digestive system like an oral supplement

The problem was that some of these individuals may have had gastric issues, which precluded the use of a standard vitamin B12 tablet or capsule, and there were psychological contraindications to administering injections of B12 to addicts who normally used a syringe to inject heroin

Arylacetamide deacetylase: a novel host factor with important roles in the lipolysis of cellular triacylglycerol stores, VLDL assembly and HCV production

PMID 18709899

Then from here, imagine a square connected to the triangle

Redness and swelling may occur, and the area may be painful for a few hours