I agree that having a vet come to your house is much safer then going to a surgery! Although it is still a risk, especially if they come straight from the surgery.
In any case, i feel veterinary advice should be sought before you start pumping a snake full of "highly effective over the counter non-prescription drugs". Clearly the owner of the snake does not have the necessary expertise to diagnose any parasites the snake might have picked up, hence the recommendation to take it to a vet to have it checked out.
Nobody would bring a wild caught animal directly into their collection without having it checked/treated for parasites and then quarantined for 6-12 months. Why should it be any different with this snake? He may have only been gone for a day or two, but that is most certainly enough time for a snake to pick up a whole range of parasites, and considering we all know for a fact that the snake has eaten (i doubt it was a frozen-thawed lab rat!!), i would be very worried, not only for the snake in question, but also for the rest of the snakes in your collection.
Sure, your snake is not likely to drop dead from a worm infection tomorrow, but if you introduce these parasites to your entire collection it is only a matter of time (although quite possibly years) before the health of your animals is at risk.
It only costs $60 for a vet check up. For the peace of mind i think that is good value, but it's your snake, if you want to risk it that is your choice, i'm only trying to offer some friendly advice.
... don't know if its dead or not...
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confucius say,
