what happens when you hit a vein during injection? Vitamin B12 Shots Uses, Benefits & Much More Injecting substances can expose individuals that use injection drugs to serious harm, but understanding the difference between safer and more harmful sites can help reduce these potential dangers. Here's a breakdown of How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust
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what if i hit a vein injecting b12 ๐ Not all shots are the same