Some HCG brands indicate that multidose vials should be stored in a refrigerator at 2C to 8C (36F to 46F) after reconstitution, and discarded 60 days later
However, it should be taken in recommended doses as prescribed by your doctor
The key point: the best option depends on the reason for low B12 and your clinical context
received advisory/consulting fees and/or other support from Altimmune, AstraZeneca, Bayer, Biomea, Boehringer Ingelheim, Carmot Therapeutics, Cytoki Pharma, Eli Lilly, Intercept, Janssen/Johnson & Johnson, Mannkind, Mediflix, Merck, Metsera, Novo Nordisk, Pharmaventures, Pfizer, Regeneron, Sanofi, Shionogi, Structure Therapeutics, Target RWE, Terns Pharmaceuticals, The Comm Group, Valeritas, WebMD and Zealand Pharma
manufacturers assign their own brand name
What is the difference between TB-500 and Thymosin Beta-4