vitamin b12 injection nhs B12: Symptoms, Dosage & Toxicity Risks Vitamin B12 Injection Luton |

Yes, though rarely

[5] The primary contraindication for hydroxocobalamin injection is a known hypersensitivity to hydroxocobalamin, cobalt, or any component of the formulation

the MHRA advises checking vitamin B12 levels if deficiency is suspected and considering periodic monitoring in those with risk factors [6] Chronic alcohol consumption can damage the gastric mucosa and impair absorption Nitrous oxide exposure (including recreational use) can inactivate vitamin B12 in the body, causing functional deficiency and neurological symptoms If you experience symptoms such as unexplained fatigue, pale skin, shortness of breath, neurological symptoms (tingling, numbness, balance problems), mood changes, or cognitive difficulties, contact your GP promptly

The dose landing in fat instead of muscle B12 is given as an intramuscular injection for a reason: muscle has the blood supply to absorb it steadily

PMID 20607069

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