Groups who are at higher risk of developing a B12 deficiency include the following: Vegetarians Vegans Pregnant women Breastfeeding women Older women Those who have had gastric bypass surgery or another surgery in which part of the stomach was removed Those who drink alcohol excessively Those taking and of the drugs listed previously such as Metformin How Much B12 Is Enough
We then measured 0.3 l of each sample using a 1 l Hamilton syringe (Hamilton, 80135) and extracted these volumes in 20 l of a 75:25:0.1 HPLC grade acetonitrilemethanolformic acid extraction mix with the following labelled stable isotope internal standards: 2 H 9 -choline (DLM-549), 13 C 4 -3-hydroxybutyrate (CLM-3853), 13 C 6 , 15 N 2 -cystine (CNLM-4244), 13 C 3 -lactate (485926, Sigma-Aldrich), 13 C 6 -glucose (CLM-1396), 13 C 3 -serine (CLM-1574), 13 C 2 -glycine (CLM-1017), 13 C 5 -hypoxanthine (CLM-8042), 13 C 2 , 15 N-taurine (CNLM-10253), 13 C 3 -glycerol (CLM-1510), 2 H 3 -creatinine (DLM-3653), 13 C 10 -kynurenic acid (80445, Sigma-Aldrich), 13 C 10 , 15 N 5 -adenosine (CNLM-3806), 13 C 8 -indole-3-carboxaldehyde (CLM-10745), 15 N 4 -inosine (NLM-4264), 13 C 10 -kynurenine (CLM-9884) and 13 C 4 -methylmalonic acid (CLM-9426)
doi: 10.1186/s12906-020-03152-7 523 LiuHHuaYLuoHShenZTaoXZhuX
How to use: Shake, spray 4 times under tongue, hold 20 seconds, then swallow 2 times daily for adults
