Minor side effects can include: A bit of tenderness, puffiness, or pink discoloration right around the puncture A brief warm or flushed sensation Mild headache or nausea Reach out to a medical professional right away if you notice: Redness that keeps spreading, heat, or discharge near the site (possible infection) Hives, facial swelling, or difficulty breathing (possible allergic reaction) Persistent numbness or tingling that spreads beyond the site Fever or chills within 48 hours of injection Safe Needle Disposal and Storage A proper FDA-cleared sharps bin is ideal
In fact, most people are able to get enough vitamin B12 through diet alone
The NHS treatment guidance sets it out clearly: Loading phase: an injection of hydroxocobalamin every other day for about two weeks, or until symptoms stop improving
doi:10.1016/j.tem.2017.02.004 (PMID 28291578) Roberti A, Fernndez AF, Fraga MF
Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, which inhibits bacterial growth but does not prevent peptide oxidation
If this happens, avoid driving or operating heavy machinery until you understand how the medicine affects you