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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
Vials (50 mg each, subcutaneous route only) One 50 mg vial lasts about 10 to 20 days at 2.5 to 5 mg per day
Allergy to vitamin (any kind)
For those without an absorption problem, research suggests that high-dose oral B12 supplements can be as effective as injections in raising and maintaining B12 levels
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