Hi Rudenski
Thanks so much for this comprehensive list of possible reactions to ivermectin. I've been worming my horses with this drug for years and have not noticed any reaction that they have had to it. Now, after reading the list of side-effects that you posted, I wonder if, just because I can't see anything happening to them, the horses are suffering from headaches, itches etc. I'll be checking more closely for adverse reactions next time.
It also helps me to see that I have to weigh up the possibilities of some serious side effects from ivermectin against the side effects and effectiveness of other parasitic treatments.