If you would prefer to start out with sublingual forms and oral B12 then I recommend this supplement
For those who dont consume animal foods, such as vegetarians and vegans, there are plant-based sources of vitamin B12 available, including nutritional yeast, fortified foods, cereals, mushrooms, and certain types of algae
Glutathione recycles Vitamins C and E after they have been oxidized, therefore playing a decisive role in their normal function
USP Compounding Standards and Beyond-Use Dates (BUDs) (PDF)
What Happens After Your First B12 Injection Following your first B12 injection, several physiological processes begin immediately, though you may not feel different straight away