Uh oh, the dreaded worming question. I am just goig to say it like this. I asked a very similar questions and got jumped. I will tell you from my expereince as many will only say its "fine" and not give much more info from that. I am not going to go into details as my post was trying to get an answer that many didn't know and they went to critisize.
Anyways, panacur has been known to do damage. Will it? More not than yes. But there is a possibility. There are several other med's that are out there and in my experience the ivermectin subcutaneously didn't do very well, if anything beside removing a few eggs. The one I can say that worked very well and was recommended by several reptile zoo vets and another herp vet in New York and Texas, said strongid works well. All I can say is give the correct dose and double check the vets math.
My white throat was very emaciated upon arrival and thats what I get for buying a wild caught. But unlike most, this one pulled through. And it wasn't from luck, well, most of it. I explained to many that my husbandry was fine and some insisted on not worming at all. Well, I CAN say that he would not be in the position today that he is and most likely would be dead! They said why worm if he is eating. Well, moving into captivity is stressful and the worms were making it worse. I say worm it, be careful, do NOT handle it, and feed it as much as it will eat, soak him as the meds wil dehydrate him and leave it alone until the next feeding time. If it appears healthy and fat don't worm it. Period, the meds are hard on the system and will cause more stress. If it is a wild caught and is emaciated then do it before it gets to far to do and then you'll be trying to keep it alive let alone worm it. I never handle my white thoat. Ever. The only time handle him (its a proven male) is to soak. And everybody who knows white throats know for some reason they just don't seem to like water very much and are horrible swimmers. So I keep the soaking water at shoudler height. I soak once a week. He gets handled two to four times a month and its less than 2min each time. He never tries to bite. Not once. I respect him to be left alone and he allows me to move him without a fuss. Besides, I think we both like it that way. Fromt eh first time I got him to now at 2.5 months later, he grew to 3x the wieght he was and went from 1.75 ft to appx 3ft. So I guess I am doing something right. Go with your gut and not from what everyone has to say. frankly, there are some here some here who appear they want to help but really don't care if it lives or dies. You just have to go with go with your gut feeling.