I know some have asked about the twitches, spasms, and tingles. I was having all of those. And turns out that I was severely deficient in B12. We tried oral vitamin B12, Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium Vitamin B12 Deficiency as a Cause for Numbness and Tingling post b12 injection pins and needles Pernicious Anaemia If you've been feeling weak, foggy, or experiencing numbness in your hands and feet, it could be a sign of vitamin B12 deficiency. B12 is essential for nerve function and red blood