So if they get to the point that they aren't eating for a day or two it's important to make an appointment with your vet right away
If found deficient, 1,000 g/day to achieve normal levels
so it should be addressed separately
But even if you and your veterinarian are able to get the underlying problem under control, the symptoms may not completely resolve because if left untreated, cobalamin deficiency causes vomiting, diarrhea, and weight loss
After opening, use it within the shelf life stated on the label, store it refrigerated, and check that it looks clear before each use: do not use water that is cloudy, discolored, or has visible particles.
Waist circumference and other body measurements can be tracked