whats b12 injection good for Vitamin Injections Energy, Wellness, glow The Truth About B12 Injections:
Description
Infants Upto 6 Months 0.4 micrograms (mcg)

Doctors may not be prescribing oral vitamin B 12 formulations because they may be unaware of this option or have concerns regarding its effectiveness

Treatment of vitamin B12 deficiency-Methylcobalamine

NNMT catalyzes the methylation of nicotinamide (vitamin B3) using S-adenosylmethionine (SAM) as the methyl donor, producing 1-methylnicotinamide (1-MNA) and S-adenosylhomocysteine
