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Deficiencies in vitamin B12 can significantly affect energy levels since it is responsible for red blood cell production and oxygen transport

P.S.: Use your phone notes or a simple journal to track where you injected each week so you dont forget

Nguyen NB, Le TT, Kang SW, Cha KH, Choi S, Youn H-Y, et al

(Source: Vitamin B12 Deficiency in Cats: The Role of the Gut.) A B12 deficiency can cause weight loss, lethargy, diarrhea, or vomiting

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However, they should not substitute a balanced diet rich in vitamin B12
