Freezing damages B12, and a frozen vial should be discarded
1 2 3 "Contributions of microbes in vertebrate gastrointestinal tract to production and conservation of nutrients"
Blocks NNMT in fat cells In 3T3-L1 mouse fat cells, 30 M of 5-Amino-1MQ for 24 hours strongly lowered 1-MNA levels direct proof of NNMT inhibition (Neelakantan et al., Biochemical Pharmacology, 2018)
Units on a U-100 syringe: 0.20 mL 100 = 20 units
Conversely, if you are a vegetarian or vegan, you might need to rely more on B12 shots or supplements to maintain adequate B12 levels
It can lead to neuropathy, megaloblastic anemia, and pernicious anemia, [2] [13] causing symptoms including fatigue, paresthesia, depression, cognitive decline, ataxia, and even irreversible nerve damage