dog injections b12 Rx Vitamin B-12 (Generic) Injectable Solution Veterinarians may prescribe vitamin B12 injections to animals with a deficiency Vitamin for Cattle, Sheep, Swine,
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What Gambit62 said is exactly what you have done

However, certain underlying conditions, such as diabetes, may be associated with both elevated B12 levels and changes in blood sugar

PMC 4453489

When giving parenteral Vitamin B12, the electrolyte that must be checked first is potassium, and the complication you are trying to prevent is severe hypokalemia (dangerously low blood potassium levels), which can lead to life-threatening cardiac arrhythmias or sudden cardiac arrest
