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is it legal to inject vitamin b12 yourself How Give Injection + Benefits Vitamin B12 Dosages: Your GoodRx
Description
The advice is cautious and sensible rather than absolute

NPR Shots

PMC 5788147
Subcutaneous injection in cattle and swine, or intramuscular injection in swine, can cause a transient local tissue reaction that may result in trim loss of edible tissue at slaughter
