will a doctor prescribe b12 injections Vitamin Injections: What You Need To Know Sublingual B12 vs. B12 Injections:

Vitamin B-Complex Injection can be given either intramuscularly (IM), usually into a large muscle like the upper outer buttock (gluteal muscle) or thigh, subcutaneously (SQ) or sometimes intravenously (IV) as a slow injection in a clinical setting

Cyanocobalamin (Vitamin B12) Injection Cyanocobalamin (Vitamin B12) Injection (30 mL Vial) Cyanocobalamin (Vitamin B12) Injection (10 mL Vial) commercial product Product Overview Cyanocobalamin (vitamin B12) injection is a sterile, prescription-only parenteral formulation of a water-soluble cobalamin analogue that serves as the principal therapeutic option when oral absorption of the vitamin is impaired or when rapid repletion is clinically required

Several well-established risk factors increase the likelihood of B12 deficiency

[Crossref] Dawson TA, Scott KW, Merrett JD (1978) Trial of folic acid therapy in psoriasis

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