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extremely rare 2 Vitamin B12 Shots Are Sterile If you go to a trusted source like your doctor or nurse practitioner, you shouldnt have to worry about whether or not the injections are sterile
Any persistent or severe reaction should be reported to a healthcare provider immediately
Individual outcomes vary
The wide variation between individuals is real some people stay symptomatic at 40 ng/mL while others feel fine at 25 ng/mL but the ordering of symptoms tends to hold
Schedule Your Free Consultation Today About the Author Author:** Blueline Wellness Group Medical Team Medical Reviewer:** Jose Vazquez, LVN Published:** December 17, 2025 Last Updated:** December 17, 2025 Fact-Checked:** Yes Patient-Reviewed:** Yes Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice
Most data are extrapolated from NNMT biology and animal work
