where should you inject b12 Best Vitamin Injection Sites: to B12 · PA Relief B12 Shots at Home: How,

If the issue lies with absorption, B12 shots or IV infusions are an effective alternative to oral supplements because they are administered via injection or intravenously, meaning they do not need to be absorbed through the digestive process

If you are arranging US delivery from Canada, plan ahead so your injection schedule, storage needs, and refill timing stay aligned

31 Since the 2021 review, one more RCT has been published that compared oral B12 alone, 25 g per day (form not reported), or with folate (800 g per day) versus no supplements for 6 months in patients with mild cognitive impairment

But, we need more studies to know how well it works and the best dose