oral vitamin b12 vs injection vs. Supplements: Which One Do You Actually Need? – ELLEMES Medical Spa Oral vitamin B12 versus intramuscular

Effect of Concentration of Some Dietary Amino Acids and Protein on Plasma Urea Nitrogen Concentration in Growing Kittens

The B12 binds to transcobalamin proteins in the blood, which carry it to tissues where it is converted into its active forms and put to work in methylation reactions, mitochondrial energy production, and red blood cell synthesis

Your doctor may require regular blood tests to monitor your body's reaction to the injections

[DOI] [PubMed] [Google Scholar] 116.Quilliot D., Coupaye M., Ciangura C., Czernichow S., Sall A., Gaborit B., Alligier M., Nguyen-Thi P.L., Dargent J., Msika S

Up to now, no adequate and well-controlled reproduction studies have been conducted in humans and animals to determine its effects on pregnant women.[24] However, there is also no reports of maternal or fetal harms with the ingestion of normal daily recommended amounts during pregnancy

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