You'd have to prove that it works. Given that Covid has a better than 95% survival rate, you could eat raw rats as a cure and -- more than 9 times out of 10! -- get better. That doesn't prove any causal relationship between the rats and the recovery. Ivermectin has the same problem: most of the people who take it as a treatment for Covid recover -- because they were going to anyway.
Don't go eating raw rats OR dewormers without good evidence.