Does it matter where you inject B12? Exploring Injection Site Options
                                
                                
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                                    3 min read                                
                            
                                According to the FDA, B12 is rapidly and effectively absorbed from both intramuscular (IM) and subcutaneous (SC) injection sites. However, the exact location and injection method can influence comfort, speed of absorption, and suitability for self-administration, directly addressing the question: does it matter where you inject B12?