Were talking levels like 1200, 1500, 2000, or even 7500 pg/mL
This knowledge also explains why oral B12 supplementation may be ineffective in intrinsic factor deficiency, requiring alternative routes like sublingual, nasal, or injectable B12 to bypass the intrinsic factor-dependent absorption pathway
You may experience the following if you have an inadequate amount of vitamin B12 in your body: Weakness, tiredness, lightheadedness Paleness in the skin Shortness of breath Heart palpitations Depression or other irregular changes in your behavior Loss of vision Muscle weakness Consult with our team if you are experiencing the above symptoms so we can help you determine if a vitamin B12 injection may be right for you

Indicated Cases This formulation is most appropriate for: Adult cats 2.55 kg with FIP presenting alongside anaemia (confirmed by haematology or suspected clinically) Wet FIP cases with concurrent lethargy and appetite suppression disproportionate to effusion severity Dry FIP cases with systemic involvement and immune compromise Cases where owner or veterinarian wishes to consolidate daily antiviral injection with B12 supplementation Cats on concurrent medications that may affect appetite or GI absorption This Formulation Is Not the First Choice For Cats requiring therapeutic-dose B12 at intervals other than once daily maintain a separate B12 protocol as directed by your veterinarian Cats outside the 2.55 kg weight range select the appropriate concentration for your cat's weight Cats with no secondary systemic complications the standard 30mg/ml formulation is sufficient Concentration Selection Guide Administration Administer subcutaneously once daily

In this disease, absence of digestive enzymes and intrinsic factors has occurred