where do they put b12 injections at Home - Safety Guide for Self-Administration B12 Injection Dosage and Frequency:

This was exemplifi ed by the fact that urinary excretion of methylcobalamin was one-third less that of cyanocobalamin.[1] Another point of interest regarding B12 supplementation is the commonly held belief that intramuscular injections of B12 are more effective than oral supplementation

Vitamin B12 for brain health fights depression and anxiety, making it a strong ally for mental health

Improves mood - B12 plays a role in producing serotonin, the feel-good hormone

. Doctors may not be prescribing oral vitamin B12 formulations because they may be unaware of this option or have concerns regarding its effectiveness Objectives: To assess the effects of oral vitamin B 12 versus intramuscular vitamin B 12 for vitamin B 12 deficiency. Selection criteria: Randomized controlled trials (RCTs) comparing the effect of oral versus IM vitamin B 12 for vitamin B 12 deficiency

Do not use in combination with tetracyclines