syringes and needles for b12 injections 3mL | 25G x 1" - BD 305787 Luer-Lok™ Syringe with BD Eclipse™ Safety B12 vitamin Store Needle and
Description
These may include: A vitamin B12 deficiency can also lead to pernicious anemia

Cyanocobalamin injection: Uses, side effects & warnings

If you develop severe allergic reactions such as difficulty breathing, facial swelling, or widespread rash after a B12 injection, call 999 or go to A&E immediately, as these may indicate anaphylaxis, though this is extremely rare

Liquid vitamins might also be absorbed by the body more quickly than other forms of nutritional supplements

Some folks inject more than once per day
Published rodent in vivo studies have used intraperitoneal injection and oral (gavage) administration