also need a source- when i tried to search Amazon they used the ph spelling instead of f spelling
This is the original source that Tippens used to use .... no idea if he/they still recommend this source....
https://thehappyhealingstore.com/product-category/fenben/
Best of luck.
https://www.amazon.com/Panacur-Dewormer-Package-Contents-packets/dp/B000296N7S
Sorry for the misspelling.