injections of b12 are given in the treatment of What is recommended regimen for vitamin deficiency using B12 injections? The Truth About B12 Injections:

I cannot emphasize enough the importance of seeing a well-qualified, board-certified physician, or physicians office, who does this procedure frequently, Tracy Evans, MD, board-certified dermatologist, Mohs surgeon, and medical director of Pacific Skin and Cosmetic Dermatology in California, tells Glamour, noting that injecting the undereye area has more risks compared with other areas of the face

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More information: Vitamin B12 and Nerves Vitamin B12 has a Regenerative Effect on Nerves All in all, vitamin B12 is said to play a major role in the regeneration of nerves and can thus be applied as a potential therapeutic agent for a wide range of diseases

B12 and the Brain A vitamin B12 deficiency is typically one of the first things checked in someone who is experiencing unexplained cognitive impairment, Yourman says, since not getting enough of the essential vitamin can cause memory problems and confusion

Heres a list of the benefits: Prevents Anaemia Alleviates Anxiety Improves Sleep Boosts Energy Improves Brain Power Supports Heart Health Reduces Risk of Birth Defects Eases Morning Sickness Prevents Osteoporosis Reduces the Risk of Macular (Eye) Degeneration Boosts Immunity Aids Weight-loss Prevents Hair-loss Enhances Skin Health and Appearance 1

This nutrient plays a pivotal role in the production of red blood cells, DNA synthesis, and nerve function