What's the Best B12 Delivery Method: Sublingual or Injection?
https://www.livestrong.com/article/525195-what-is-the-difference-between-an-injection-of-b12-and-taking-it-under-your-tongue/
WebMay 10, 2022 · What's the Best B12 Delivery Method: Sublingual or Injection? By Elizabeth Kuster Updated May 10, 2022 Medically Reviewed by Mayoni Ranasinghe, MBBS, MPH Effective B12 delivery methods that fight vitamin deficiency include injection, liquid sprays and dissolvable tablets and lozenges taken sublingually under the tongue.
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