how often can you inject vitamin b12 Are Shots Safe? Royal Palm Beach Medical Group Vitamin B12 Injection Side Effects
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For best results, use consistently for at least three to six months, ideally alongside attention to nutrition (particularly protein and iron levels) and any underlying causes

doi: 10.1007/s11940-016-0410-9 36 RajSRBiaggioniIBlackBKRaliAJordanJTanejaIet al

This could mean your body lacks b12

Upper Arm Your deltoid muscle is located just below your shoulder in your upper arm

No one schedule applies across the board, and that's exactly why a plan built around you tends to work better

Week four is often a checkpoint
