is b12 an intramuscular injection

FDA.gov (2026) 14 ou-exclude https://static.wixstatic.com/media/bbe2f88dc96846de940df0140d0c9e21.jpg/v1/fit/w_960,h_640,al_c,q_85/bbe2f88dc96846de940df0140d0c9e21.jpg Style:Single Session Vitamin B12 Injections | Private GP | The Guildhall Practice

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