are b12 injections better than tablets which is vitamin injection or tablet What Injections? And Are They Safe? B12 Vs B12 Shot vs. B12 Pills:

via Medical News Today

It is essential for the production of red blood cells, which carry oxygen to the bodys tissues

Whilst the NHS notes that taking up to 2,000 micrograms daily is unlikely to cause harm in most people, there is generally no benefit to consuming such excessive amounts unless treating confirmed deficiency under medical supervision

Another is the identification of novel biomarkers that might offer even more precise indicators of response, allowing for hyper-personalized 5-Amino-1MQ dosage adjustments in future research

Science 347 (6220), 419

Given the many unknowns with high dose folic acid supplementation, particularly unmetabolized folic acid (as covered in my folate article), Im not able to draw any strong conclusions here