The systematic review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO), registration number: CRD42024554513 (Available from) (NIHR, 2025)
Its development was terminated in 2007
Without this, contamination risk increases dramatically with each use of the vial
The conversion from cyanocobalamin to active forms requires several enzymatic steps and adequate amounts of other nutrients including folate, riboflavin, and various minerals
Description This product contains a high concentration of vitamin B12, an essential nutrient for the formation of red blood cells, the correct functioning of the nervous system and the health of the gastrointestinal tract
Phyla Six distinct phyla were identified in the cecal microbiomes, but not all were present in each sample