What is the dosage per lb?
I don't have an exact dosage. I just give em about as much as you'd put on a toothbrush. 1 inch or so on your finger. It takes care of it, I mean all of my dogs are parasite free.
I will say this though. I use Equimax in a 3 month rotation. I use 2 months of Ivomec and Safeguard and then on the 3rd month I hit em with the Equimax. It makes it a little cheaper for worming and gives me a little tapeworm protection as well, or at least in my mind it does.