Absorption problems Even with adequate intake, absorption can be reduced by: Certain gastrointestinal conditions affecting the stomach or small intestine Some medications Age-related reduction in stomach acid (which can affect absorption) Autoimmune gastritis (often historically referred to as pernicious anaemia) This is a well-recognised cause of B12 deficiency and may require ongoing management
Do not see it
Some users experience minor nausea, particularly when starting treatment or using higher doses
most preparations degrade within 6-12 months under proper storage
(L-Valine,L-Glutamine,L-Glycine,L-Proline, L-Lysine, L-Alanine,L-Arginine,L-Histidine,L-Leucine,L-Tyrosine,L-Serine, L-Threonine.L-Lsoleucine,L-Tryptophan, L-Methionine) Take one capsule daily
(PubMed) Shrubsole MJ, Shu XO, Li HL, et al