Seek urgent medical attention for severe allergic reactions, blood in stools or vomit, or persistent severe abdominal pain after taking B12 supplements
At any time, about The catagen phase starts when the anagen phase ends and tends to last about 2 weeks
If you are also low in iron, B12 alone will not fully resolve anemia, which is why comprehensive blood work helps
Heart palpitations Pallid skin Constipation, diarrhea, and gassiness Vision loss Numbness or tingling in the extremities Depression and memory loss Sore tongue Confusion and hallucinations Personality changes Reduced sensitivity to pain or pressure Often these symptoms take several months to a year to develop and recognize, however, if youre a vegan or vegetarian and feel down or fatigued, you may be B12 deficient
But the private gp Ive seen, has said its fine and to carry on
Three trials have reported results as of mid-2026