how to inject yourself with vit b12 self-inject intramuscular vitamin - Overview π HOW TO SELF-INJECT B12
Description
Frequency of Injections Regular, scheduled injections as part of a treatment plan may lead to more consistent and noticeable benefits
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ENERGY BOOSTING INTRAMUSCULAR (IM) INJECTION : injection into the muscle

I've never tried subcutaneous but that may be a more suitable option for your daughter
