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Retrieved 5 December 2017

The use of this nasal spray for B12 deficiency ensures rapid absorption by delivering the vitamin directly to the bloodstream through the nasal passages

Iran J Reprod Med
The IV solution remains in your body for a few hours after treatment

To learn more about the different types of injections we offer, you can explore our overview of vitamin injections for wellness

The 2024 NICE NG239 guideline on vitamin B12 deficiency in over-16s lists the main groups who need injections: Autoimmune gastritis (pernicious anaemia)