If you let it go for too long, it can cause problems in your nervous system such as: Vision problems Memory loss A pricking or numbing sensation Difficulty speaking or walking due to ataxia (loss of physical coordination) Damage to your extremities (hands, feet, arms, etc.), particularly your legs Other problems could include Infertility (this should go away with B12 treatment) Stomach cancer Bleeding and infections Damage your heart, brain, bones, and other organs in your body If you're pregnant and don't get enough vitamin B12, your baby is at risk of a serious birth defect called a neural tube defect
Tingling Sensation or Numbness In rare cases, taking lots of vitamin B for a long time can make you feel numb or tingly
The standard MOTS-c dosage is 5 to 10 mg per week via subcutaneous injection, administered once or twice weekly, for cycles of 8 to 12 weeks
In the body, Vitamin B12 is vital for energy production and the proper functioning of the brain and nervous system