how long before i feel the effects of b12 injections Quickly Does a Shot Work? Benefits & What to Expect How Long Does a B12

Extreme fatigue Dizziness Depression Anxiety Short-term memory problems Confusion Headaches Tinnitus (ear ringing) Sore red tongue Painful numbness Tingling in the arms and legs Constipation Diarrhea Muscle weakness Muscle spasms Difficulty walking Poor motor skills Infertility Heart palpitations Feeling out of breath Can a Vitamin B12 Injection Lead to Overdose

Int J Drug Dev Res 3 38.Narang N, Sharma J (2011) Sublingual mucosa as a route for systemic drug delivery

Interestingly, most people are deficient in vitamin B12, especially vegetarians or vegans, and persons with specific diseases

For patients with pernicious anemia, severe malabsorption, or acute neurological symptoms, injections remain the appropriate clinical choice

Its especially beneficial for individuals with absorption issues, such as those with gastrointestinal disorders or after certain surgeries

Individual response varies depending on severity and duration of deficiency