Ask your vet if she has a subscription to VIN, the Veterinary Information Network (www.vin.com). It contains up-to-date information and message boards for vets to consult each other. Similarly, there exists VSPN, the Veterinary Support Personnel Network for techs, assistants and receptionists (www.vspn.org).
The type of medications would depend on the type of parasites found. The most common gastrointestinal parasites found on a fecal exam are nematodes (the group of "round worms"
, often ascarids or oxyurids. I'm not too familiar with what is common in Tokay Geckos. Nematodes are treated with febendazole (most popular brand is Panacur), which is also used to deworm livestock.
The dose varies, however, and I'm pretty certain that whatever febendazole your vet has in stock is way too concentrated for little Tokays. The correct dosage is very important, and is based on the weight of each animal. Too little and you won't be taking care of parasites, too much and it's a strain on the animal.
Also consider that the presence of parasites is not necessarily disease causing. Some vets and owners prefer preventive de-worming, others will only do it when it's suggestive of a problem. In WC juveniles, I think I would opt to de-worm because of stress of capture and shipping can give the parasites a chance to take advantage. Stress is usually the factor that makes herps go wrong. However, if they were long-term captives with a history of no health problems and a small load of parasites was found, I would not bother deworming.
Keep us posted!
Christina
www.herptiles.net