Many Chinese products are under-dosed and only contain a small percentage of the total peptide
Nature , 288(5792), 715717
Depending on the vitamin selected, each injection is a quick solution to low energy, decreased immunity, stress, anxiety, and even depression
5 Conclusion This systematic review and meta-analysis indicate that sublingual and oral vitamin B12 administration provide efficacy comparable to intramuscular injection in improving serum cobalamin levels and reducing hyperhomocysteinaemia
(AIs are established when there is insufficient information to determine EARs and RDAs.) For children ages 113 years, the RDA increases with age from 0.9 to 1.8 g/day
A common approach uses 4-8 weeks on followed by 2-4 weeks off