can i overdose on b12 injections Vitamin Guide: Forms, Dosage, and When to Worry About Too Much What Happens to Your Body

The inclusion of participants experiencing these hormonal changes may be another limitation of the study

Medically reviewed by Lauren Okafor | MD , The Frank H Netter MD School of Medicine, Loyola University Medical Center on July 21st, 2026

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The most notable known mechanisms [for weight loss] are linked with the central and peripheral nervous systems through direct activation of the hypothalamus and hindbrain or indirect activation via the vagus nerve, resulting in reduced appetite and food intake

Both sublingual vitamin B12 supplements and B12 injections can be appropriate depending on your specific circumstances