vitamin b12 injection brand name B-12 Injection, 3,000 mcg/mL at Tractor Supply Co Vitamin B-12 3000 mcg Injection,
Description
Doctors may order blood tests to check B12 levels in some patients with nerve problems
PubMed reference (NNMT inhibition & metabolic health)

Anti-Aging Effects: Aids in DNA repair and cellular regeneration

Experiencing headaches or muscle cramps

That finding alone makes it worth considering for anyone struggling with GI-related side effects

Combined action of SAMe, Folate, and Vitamin B12 in the treatment of mood disorders: A review
