This article was reviewed by Lynn Marie Morski, MD, JD. Key Takeaways: Tirzepatide with B12 is sometimes combined as a weekly injection for weight loss. Vitamin … ...

Vitamin B12 is an essential vitamin, and low levels are linked to obesity. B12 shots could improve fatigue if you have a deficiency, but there’s not much research on them as a weight loss treatment.

Since the dawn of the Internet (and probably well before), there have been several solutions sold for weight management — including vitamins for weight loss. One in particular, vitamin B12 supplements ...