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Severe Allergic Reaction (Anaphylaxis): Includes rash, severe itching, swelling of the face, throat, or tongue, or difficulty breathing
Once supplementation stops, B12 levels typically return to the normal range within a few months
Common Side Effects Injection site reactions represent the most frequently reported effects
I havent had any side effects
Vial sizes start at $25 for the 1.2 mg starter and ladder up through 6.4 mg vials, with a flat $39 medical visit fee
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