Vitamins & Supplements For FIP Care


Vitamin B12:  Extremely safe to give, subcutaneous B12 injections can be given to cats weekly to help fight anemia and support the immune system. 

Daily vitamin support can be provided with Pet Tinic or similar.  

B12 is normally derived from foods of animal origin such as meat, liver, fish, and eggs. Most commercial cat food covers the daily B12 requirements of a healthy cat. A cat that is suffering from FIP, however, will have reserves depleted quickly and therefore requires supplementation.

  • B12 promotes the development and maintenance of red blood cells.
  • B12 maintains nervous system integrity (nerve cells and normal myelination –the fatty sheaths that cover and protect nerve endings). It is essential for nerve and cognitive functions.
  • B12 keeps the intestines healthy for the proper digestion and absorption of food, as well as the metabolism of carbohydrates and fats. 


Gabapentin:  A mild pain reliever that can be given orally 60-90 minutes before injections. When given properly, this will just take the edge off of the injection without leaving your cat feeling groggy or overly sedated. 

Lidocain cream: Can be applied to the cat’s skin 30 minutes before giving a GS441 injection, this can help reduce the sting of the drug. Be certain to use the cream that does NOT contain aloe, as aloe is highly toxic to cats. 

Slippery Elm Bark:  Slippery elm bark syrup is an all natural remedy for the treatment of nausea, vomiting and other ailments.

Denamarin: Denamarin Tablets are a liver supplement for cats that raises antioxidant levels. 

Silymarin (Milk Thistle): Boost your cat’s liver function with this natural supplement known for its capacity to support and protect the liver.

*If treating FIP with GS411, it is recommended to give your cat either Denamin or Silymarin to provide maximum liver support. 

Dedicated to all FIP angels.

All information contained on this website is compiled from real-life experiences of cat owners who are currently, or have previously treated their cats for FIP.  Most of us are not veterinarians and the  information provided within is not intended to substitute or replace medical care by a licensed veterinarian. 

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