Help! Horsfield with worms

[Crazee]

We are sick with worry over our boy. We are new to keeping torts, we got him at Christmas, he was rescued, is about 8-10 years old and has a slightly deformed and soft shell. Not too serious that a little love and care will not help, if not cure.

A few weeks ago his behavior changed, he became lethargic, dug deep in his substrate and stopped eating. I took him to the vet last week (Seers Croft in Horsham) and a faecal sample confirmed he was riddled with worms, despite him having a one off shot of Panacur at our local (non tort) vets a month previous. He has been prescribed a five day course of Panacur from a syringe, giving one graduation on the plunger a day. It takes three of us to administer, but half way through we are getting the hang of it.

However he has not eaten since last Thursday and not for a week before that and we are really worried, he used to eat every day. How long can he go before not eating is life threatening? Does the Panacur fill him up? How quickly will it work and how quickly will his appetite come back?

We really need some reassurance here, we are doing all we can and just want him back to his old self as soon as.