best spot for b12 injection How to self-inject intramuscular vitamin - Overview B12 Injections at Home -

While I have never used expired b12 vials since a pharmacist told me not to I have used multi-use vials after 28 days when they are supposed to be discarded and unrefrigerated once opened as well

[1] Without intrinsic factor, dietary B12 cannot be absorbed effectively, leading to deficiency regardless of dietary intake

2 mg injected is not remotely the same as 2 mg rubbed on the face

During the randomized treatment period, patients received a standard lifestyle instruction every 12 weeks on reduced-calorie diet (approximately 500 kcal/day deficit) and increased physical activity (recommended minimum of 150 min/week) that began with the first dose of ZEPBOUND or placebo and continued throughout the 72-week treatment period