I’m sure some of the “experts” on worming will reply, but I will address what we did with a horse that was suspected of having NTW’s. In addition to the DD Equimax protocol, we started him on the Bye Bye Itch supplement and the Bye Bye Itch lotion that we got from The Healing Barn. The lotion seemed to stop his itching very quickly and I think the supplement helped in the long run by making his reaction to the gnat bites less and less.
I’m not sure what “Equest Plus” is…do you mean Quest Plus? When we started the DD of Equimax, we too had an increase in the itching. We used dexamethasone for 10 days to counteract that. It did seem to work.