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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

TSW patients can also request a Certificate of Analysis that walks through the detailed testing results of their own medication

Healthline notes that another side effect of too much vitamin B12 is the development of a rare and slow-growing blood cancer known as "polycythemia vera" (PV)

If you have malabsorption syndrome (such as short bowel syndrome, certain bariatric surgery patients, chronic pancreatitis, or celiac disease that severely impairs nutrient uptake), you might need these injections indefinitely to prevent recurrent deficiencies