In practice, most users report similar results with either approach
Most of the best sources of vitamin B12 are animal products (like fish, meat, eggs and dairy products), so plant-based eaters are advised to take a daily vitamin B12 supplement to ensure that they get enough of the essential vitamin
Generally, the 2-pack suits lighter research use or anyone who wants a single backup vial
Now we know that the British National Formulary (BNF), that little booklet that is produced twice a year by the Royal Pharmaceutical Society and the Royal Society of Medicine which acts as a reference for doctors to consult in order to treat patients correctly, used to recommend a 1mg injection of Hydroxocobalamin every month when the injection was introduced at the start of the 1960s
Start: 100 mcg nightly
Clinical studies have confirmed that AOD-9604 does not stimulate IGF-1 production in any biological system tested, including human clinical trials monitoring serum IGF-1 levels over 24-week treatment periods