When comparisons were made, all relevant treatment groups were included
The most common types include: Cyanocobalamin Methylcobalamin Hydroxocobalamin Each type varies in absorption rate, duration, and suitability
How Soon May I Feel Results After Starting B12 Injections
The NIH Office of Dietary Supplements, citing Institute of Medicine recommendations, advises that it is advisable for those older than 50 years to meet their RDA mainly by consuming foods fortified with vitamin B12 or a supplement containing vitamin B12. This recommendation reflects the fact that 10 to 30% of older adults lose the ability to efficiently absorb naturally occurring B12 from food
(PubMed) Banerjee S, Hawksby C, Miller S, Dahill S, Beattie AD, McColl KE
Once your levels stabilize, you may only have to get injections less often to keep your levels reasonable