can anyone have b12 injections

None of the participants were COVID-19 vaccinated at the outset, but almost 40% took one or more doses during the study period cat digestive supplement Pack Size:3 Vials b12 injections name Cyanocobalamin Injection IP - 30 ml Liquid Formulation | Cold & Dry Storage, Dosage https://www.bmj.com/content/bmj/383/bmj-2022-071725/F1.medium.jpg

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