More discomfort Intramuscular injections typically require larger needles, which can be more difficult to self-administer and often cause more irritation
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
Being aware of how supplements affect your body supports better decision-making
It gives me a great level of energy and focus I never had even when I was young
But again, check with a healthcare pro before adding a supplement to your lineup