can a b12 injection make you feel sick I Tired All the Time. Do I Need Shot?: Shawn Veiseh, M.D.: Family Medicine Feeling tired, foggy, or run-down?

Dosing Protocol Suggested daily titration approach

Vitamin B12 deficiency is relatively common, particularly among older adults, vegetarians, vegans, and individuals with certain digestive conditions

Rotation of injection sites: Avoid local skin reactions

Only a medical professional should use this site because it's really close to major blood vessels and your sciatic nerve (which could be damaged if the injection is not administered properly)

Can you inject both on the same day

Discontinue if: Significant adverse reactions occur, you achieve body composition goals, no response after 8-12 weeks at optimal dosing, medical contraindications develop, or pregnancy occurs