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where is vit b12 injection given How to self-inject intramuscular vitamin - Overview Instruction Guide for Intramuscular (IM)
Description
PMID 17434786
It depends entirely on where you're starting

Clear urine can also happen

Chewable B12 tablets begin absorbing through the oral mucosa before reaching the stomach, providing an absorption pathway that bypasses some of the reliance on intrinsic factor making the chewable format particularly well suited to those who may have compromised digestive absorption.*
