Possible Long-Term Risks of Vitamin B12 Does b12 give you energy right away
When performed correctly, B12 injections have minimal risks or side effects
Mild side effects and potential risks, which should be referred to a doctor if they persist or worsen, include: pain, redness, or itching at the site of the injection mild diarrhea swelling sensation in the body More serious side effects, which require immediate medical attention, include: muscle cramps irregular heartbeat unusual weakness or tiredness swelling of the ankles or feet Severe reactions are very rare but require emergency intervention
References Anderson WJ, da Cruz NFS, Lima LH, Emerson GG, Rodrigues EB, Melo GB
Use Sterile Equipment: A lways use new, sterile syringes, needles, alcohol swabs, and vials for each injection
The compound was first characterized in metabolic research exploring the role of NNMT in adipose tissue biology