self-administered vitamin b12 injections Ivy Grove Surgery : Self-administration of injection Vitamin B12 Deficiency - Needle

However, you should: Call 999 or go to A&E immediately if you experience signs of a severe allergic reaction (difficulty breathing, severe throat/facial swelling, or collapse) Contact your GP if you experience a rash, itching, persistent pain at the injection site, or worsening neurological symptoms despite treatment If you suspect any side effects from your B12 injections, you can report them through the MHRA Yellow Card scheme (yellowcard.mhra.gov.uk)

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Administered intramuscularly, these shots bypass the digestive system, allowing for immediate absorption into the bloodstream

Conditions affecting the gastrointestinal tract can impact B12 absorption