He continued to say that for people with B12 deficiency, parenteral supplementation (ie not through the mouth/digestive system) therefore is a useless and expensive treatment, and if you still want it the NHS should not pay for it, you should pay for it yourself
for the broader longevity research landscape, see The Best Longevity Peptides for Research in Canada
Here are some key considerations: Allergic Reactions : If you have a history of allergic reactions to cobalt, cyanocobalamin, or any other ingredients in the injection, inform your healthcare provider before starting treatment
PubMed 3
Science 295:10111011 Pevec D, Novinscak T, Brcic L, Sipos K, Jukic I, Staresinic M, Mise S, Brcic I, Kolenc D, Klicek R, Banic T (2010) Impact of pentadecapeptide BPC 157 on muscle healing impaired by systemic corticosteroid application