They look at serum B12 levels, complete blood count (CBC), and neurological function markers
In some cases, 250 g/cat, either hydroxocobalamin or adenosylcobalamin [15], is administered either subcutaneously or intramuscularly [15,37,55]
B12 injections tend to be most useful for: Patients on GLP-1 medications (semaglutide, tirzepatide) who feel fatigue in early weeks Patients with low energy, brain fog, or mood symptoms Vegetarians or vegans (plant foods don't contain B12) Adults over 50 (B12 absorption drops with age) Patients who've had digestive surgeries (bariatric, gallbladder) that affect absorption They're generally safe B12 is water-soluble, so your body excretes what it doesn't use
Similarly, B12 is classified not for its chemical nature (a vitamin) but for the high-risk administration route (injection) and the severity of the condition (Pernicious Anaemia) it treats
The research, published in the medical journal Nutrients, found that B12 and D, taken with folic acid, can reverse memory problems caused by a vitamin D deficiency
For this reason, oral supplements may be ineffective in kittens
