Never heard of Fenbendazole before, but reading about it now.
Where did you get you Fenbendazole and Ivermectin?
I ended up getting paste from one of those animal supply places.
I’d love to find someone charging reasonable prices for the tablets.
Go to indiamart.com to purchase. Get a throw away email account because you WILL be bombarded by vendors. Once you select one to work with, they walk you through how to convert your dollars to rupees. Takes about a month to arrive (for me at least, Washington state) mainly due to customs.