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Unnecessary vitamin B12 shots costing Ontario millions, study finds Most seniors getting B12 shots in province don't need them, researchers say Almost two-thirds of Ontario seniors who received vitamin B12 shots had no evidence of a B12 deficiency, according to a study published in the medical journal JAMA Internal Medicine
Common injection sites: For Intramuscular (IM): Upper arm (deltoid) Outer thigh (vastus lateralis) often the easiest self-injection site Upper outer gluteal muscle usually requires assistance For Subcutaneous (SQ): Abdomen (at least 12 inches away from the navel) Outer thigh Back of the upper arm What are the side effects
Clinical studies specifically monitoring glucose metabolism through oral glucose tolerance tests found no significant changes in glucose handling, and fasting insulin levels remained stable throughout treatment periods lasting up to 24 weeks
Key Takeaways Vitamin B12 doesnt contain stimulants, but because it supports energy metabolism, some people feel more alert if they take it late at night
They work best alongside a healthy lifestyle
For example, if you have pernicious anemia, you might need injections for life
