The appointment will take less than half an hour, and you should be able to resume normal activities immediately after the injection
2 mL or 3 mL is commonly used in research reconstitution
NCATS Global Substance Registration System
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
Mistake 6: dead volume loss Every time you draw from the vial with a syringe, a small amount of liquid stays trapped in the needle hub and dead space