Andersson, Emmanuel Shapira, Biochemical and clinical response to hydroxocobalamin versus cyanocobalamin treatment in patients with methylmalonic acidemia and homocystinuria (cblC), The Journal of Pediatrics, Volume 132, Issue 1, January 1998, Pages 121-124, ISSN 0022-3476, Gimsing P, Hippe E, Helleberg-Rasmussen I, et al
It is essential for nerve and cognitive functions
More discomfort Intramuscular injections typically require larger needles, which can be more difficult to self-administer and often cause more irritation
Reconstitution with an appropriate sterile diluent (bacteriostatic water or sterile water for injection) is required before use
Were not saying dont take B12. What we are saying is: If youre not deficient, be cautious with high doses