Hi. Sorry no one has responded to your post yet. By me responding, it will 'bump up' your post to higher on the list and hopefully that will help other members see it and offer their input.
In the meantime, here is a link to a series of previous posts on this site about Fenbendazole, in case that might help you any. I didn't read them all, but I am pretty sure they are not addressing Fenbendazole from the perspective you are looking for.