conditions in cats which require vitamin b12 injections Deficiency Cats: The Basics Vitamin B12 Is Essential for
Description
These vitamins support the nervous system and may assist the repair process

In pernicious anemia, the issue is absorption

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(And jab is the correct technique - you don't push an insulin syringe in, you jab it.) The cat won't feel it if your technique is good but will likely hiss if it's not
