A homeopathic formula's to assist the Cat's Immune system when tested positive to Corona Virus. It is also important to prevent cats and kittens to be in a stressful environment or lifestyle. Stress will cause many illness to develop, due to depletion of nutrition which then affects the immune system.

As Coronia virus and FIP virus is an autoimune disorder therefore it is highly recommended to work on repairing the immune system in your cat or kitten.   

By using the (formula 2) Immunity Builder, and if your cat is not well, I also recommend use in conjunction with the OptiCell powder supplement (which is very potent) and is also highly effective for longer term health and protection of the immunity.

It is fine to use vitamin supplements at the same time.  But maybe difficult to add to meals, if kitty can smell the different smell of vitamins,

If your Kitten has been diagnosed with FIP please
Refer to:  (order code AN183)   FIP Relief  Set of Natural Treatments.   
You can use the Corona Virus Set  in conjunction  with the FIP virus SET. 

( If Vet is unsure, but has many of the symptoms of "FIP" Virus it is still safe to use these natural medicines)

Disclaimer
Australian Clients should be aware that national legislation prohibits the marketing or advertising of any veterinary products which have not been registered with the N.R.A. These regulations were designed to control the entry onto the market of new chemical drugs and did not foresee the rising demand for proven herbal and homeopathic formulations. Other laws however, allow such treatments to be available for both human and animal treatment after personal consultation. The Treatment Program Descriptions provided are for Australian clients who should ignore the product names and other claims which are provided for International clients.