Interferon as a treatment for dry FIP

There was an old thread from 2011 on this and a Facebook group that is currently trying this modality. Pricey with limited success, many are using it. I was wondering if anyone here has tried it or know of someone who did.

The contract vet tried it as a last-ditch effort on a 10-year-old shelter cat with dry FIP about three months ago, but it wasn't successful. Ditto for two juveniles (6 - 9 months old) with wet FIP. The only times I've seen Interferon work were for panleukopenia in kittens.

Several vets around here give it to kittens that are positive for Corona virus provided a littermate or roommate has died of FIP, but there's really no way of telling whether the kittens would have developed FIP. Roughly 40% of the cats/kittens entering shelters in this area are positive for Corona, hence the littermate/roommate criterion. Unfortunately, you read reports online of vets "curing FIP with Interferon" when it was apparently a matter of them administering it to Corona + cats with absolutely no FIP symptoms, and the "cure" was that they never developed it.

Here is a very detailed article about FIP including what works and what doesn't.  Interferon is NOT good for treatment of FIP, only for prevention in cats exposed to corona virus or carrying corona virus that has not yet mutated to FIP virus.  Stimulating the cat's immune system once he HAS FIP is NOT what you want to do.  This is explained in the article.  What works best to prolong the comfortable life of a cat with dry FIP is steroids, which reduce the inflammation.  That worked on my dry FIP kitten for about six months, allowing him to live to be about a year old, but eventually the steroids stopped working and we had to put him to sleep.

http://www.2ndchance.info/fip.htm

There is a cure, but it is still only in laboratory stage and not available to the public.  Read about it here:

http://www.2ndchance.info/fip2016RxUpdate.htm

There is also experimental use of the immunostimulant polyprenyl.  Here is a video about it.  Like the use of steroids, it buys time, but so far has not been a cure.