had b12 injection but still tired

Sandoz Vitamin B12 Injectable Solution 1000 mcg/mL Canine Vitamin B12 Deficiency Treatment https://www.thebloodproject.com/wp-content/uploads/2025/07/ELEVATED-B12-1024x576.png ---------- 1000 mcg/mL Sterile Solution For animal use only Format:Pen 10mg/10mg

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