The most convenient way to administer high doses of B12 into your bloodstream are the
B12 transdermal oils developed by Dr Greg Russell-Jones in Australia. These use a special skin penetration enhancer technology that allows the vitamin B12 to efficiently penetrate across the skin and into the body.
These oils will actually get more B12 into your bloodstream that even injections.
It takes literally just 10 seconds to apply a dose of this transdermal B12 oil to your skin.
Otherwise, if you prefer the traditional B12 injections, some suppliers are these:
Injectable B12 Hydroxocobalamin
Goldpharma •
B12 Online •
Versand Apo •
HCG Shots •
Alive Plus •
FLHCG
Injectable B12 Methylcobalamin
Buy Pharma •
Dr Camp •
HCG Shots •
HCG Institute •
B12 Online •
Vitamin Quick
The B12 e-cigarettes mentioned by
@gbells are another option.