high dose vitamin b12 injections shots: Uses, benefits, and side effects Vitamin B12 Injection: Energy Boost

Levels are relative to 12 month-old mice

These include methylcobalamin which occurs in its natural form and cyanocobalamin which is a synthetic version of the same

If that is you, it is understandably worrying, but in almost all cases it is short-lived and harmless

No synergistic adverse effects have been reported in clinical practice

Sources: Dimet-Wiley AL, Latham CM, Brightwell CR, et al

The National Institutes of Health recommend the following daily dosage of vitamin B12: Birth to 6 months: 0.4 micrograms Infants 712 months: 0.5 micrograms Children 13 years: 0.9 micrograms Children 48 years: 1.2 micrograms Children 913 years: 1.8 micrograms Teens 1418 years: 2.4 micrograms Adult men and women 1850 years: 2.4 micrograms Adult men and women over 50 years: 25250 micrograms Women who are pregnant: 2.6 micrograms Women who are breastfeeding: 2.8 micrograms Adults over the age of 50 are at a greater risk of vitamin B12 deficiency because they tend to produce less stomach acid, which is needed to convert the vitamin properly