can b12 injections cause skin rash Common & Rare Side Effects of Vitamin Understanding and Managing Hives -

A B12 injection is a clinical procedure: site rotation, clean technique and correct dosing matter, which is why a trained clinician is the safest place to have one

Concentration: 50 mg/10 mL (5 mg/mL)

The form, dose, and timing are worth recording, and further workup becomes necessary if the elevation persists once those sources are accounted for, or if symptoms, examination findings, or other labs raise concern

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This restoration of metabolic cofactor availability enables enhanced function of NAD+-dependent enzymes including sirtuins, poly(ADP-ribose) polymerases, and various deacetylases that regulate cellular metabolism, stress responses, and aging processes

Uncommon (1-10 in 1,000 people): itching rash, dizziness, diarrhea