im b12 injection needle size Dr. prescribed injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r/B12_Deficiency niacinamide injection

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What goes in (sealed Canadian-DIN product, versus unclear provenance)

niacinamide injection

Style:Package of Three

The main components of compound vitamin tablets include vitamin A, vitamin B1, B2, B6, B12, vitamin C, vitamin D3, vitamin E, biotin, folic acid, niacinamide, calcium pantothenate, and others