This is another aspect of the catch-22 backlash: without appropriate levels of B12, the effects of FIP may worsen, and because of FIP, your cat's ability to retain adequate reserves of B12 is diminished
Potential Benefits: May support normal metabolic function May support normal liver function May play a role iin normal lipid transport May support normal energy metabolism These statements reflect the roles of these ingredients as essential nutrients and amino acids as documented in the scientific literature
Thorough documentation should include a full medical history, any relevant blood test results (though not always mandatory), consent, the product used, batch number, site of injection, and any adverse reactions
Which plant foods are fortified in vitamin B12
Consider alternatives too
Essigmann B et al