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I've noticed this when the nurse pushes the medicine too fast
But only if I use seperate pull and inject needles
Vegans and vegetarians may not get enough B12 from their diet
Overtime, this can lead to a B12 deficiency
Its very low molecular weight (342 Da) gives it exceptional tissue penetration, making it particularly well-suited for study in colitis and dermatitis models (Brzoska et al., Endocr Rev 2008)
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