b12 injections flu vaccine Cyanocobalamin Vitamin Injection 1000 mcg — Mountainside Medical Vitamin B-12 Injectable for Horses,
Description
For background and my updated recommendations, see my extended look at vitamin B12 in the related posts below

Is it Possible to Have Too Much Vitamin B-12

Resistance training preserves muscle mass better than any nutritional supplement

10.1111/j.0954-6820.1968.tb02452.x [DOI] [PubMed] 51.Chapman LE, Darling AL, Brown JE (2016) Association between metformin and vitamin B12 deficiency in patients with type 2 diabetes: a systematic review and meta-analysis
How should B12 injections be stored and handled
