The dosage, and it's on this site from a few years ago, is for the mixture of Levamisole (a cattle injectable given at 3cc per 100 pounds orally (this is actually my secret weapon for resistant animals, levamisole works wonderfully here for me on it's own) and Fendbendasole (safeguard or panacur) it was also for Ivermectin 1cc per 50 pounds orally and Fendbendasole...the premise is that it brings your percentage of eggs killed at worming, and the evacuation of adult worms, rather than them arresting up to 99% something nobody has seen until the Cydectin came around. Although a bensazole like safeguard/pancur it is a differing enough of a compound and not widely used that Levamisole works well in cocktails and by itself.
At the last talk (when Dr. Craig and Craddock came to the club) most were using mixtures of white and clear wormers at dosages that worked on their farm (most of the folks I talk to about stuff like this fecal like I do).
I think the cocktail idea would be great for the use in resistant goats, especially purchased from those who worm monthly, or who worm without any fecal sampling at all. It is also the cocktail I would use, if and when we ever get another freeze

Having 99% of stomach worms and tapes pooped out onto the frozen ground and not in the bedding would be huge for any breeding farm, especially long established herds.
Using a cocktail that works is alot less chemical in your goat than the worming over and over again with it not working. It would be a lot less stress on the goat as a whole to get rid of adults and arrested larve, and also the anemia they cause rather than hitting them with this or that or using things that don't work. Vicki