Oral supplementation is a standard treatment for B12 deficiency
Vitamin B-12 Injectable Solution 1000mcg/mL is a prescription cyanocobalamin injection used in dogs, cats, horses, cattle, sheep, and swine as a supplemental source of Vitamin B12. It is indicated for B12 deficiency linked to poor dietary intake, intestinal malabsorption, cobalt deficiency in ruminants, and gastrointestinal diseases that impair absorption
With a water soluble vitamin, such as B12, this is basically going to render the supplement useless, as it is going to dissipate the potency of the dosage which you are taking
You can purchase needles and syringes from several reputable suppliers in the UK
Blood vessel formation is essential in many areas of biological research because tissues depend on oxygen and nutrient delivery for normal function