Most medical documents indicate you might experience any of these: Mild diarrhea and/or upset stomach Difficulty breathing or swallowing Weight loss or weight gain Nervousness or restlessness Nausea or vomiting Headaches or migraines Paresthesias (tingling sensations) Rhinitis (chronic sneezing or a congested, drippy nose) Skin reactions, such as rash, itching, swelling, blisters, or pain at the site of injection Light joint pain Lightheadedness or dizziness Chest pain or discomfort Low blood potassium levels Irregular heartbeat Chills, night sweats, fever, or hot flushes General feeling of sickness However, people often fail to recognize that many side effects of vitamin B12 injections are consistent with B12 deficiency itself
It is a synthetic form of B12 with cyanide attached to the cobalamin (the B12)
This vitamin is naturally found almost exclusively in animal products, including meat, fish, eggs, and dairy
A common question is whether higher-dose injections are safe compared with lower-dose pills
TFE3 controls lipid metabolism in adipose tissue of male mice by suppressing lipolysis and thermogenesis