found worms in my horses poo went to where i buy my wormers from and they said worm with equimax so done that is that the right thing to do ive always wormed my horses and they are on equimaxs wormming program!
Have a chat with your vet and after about 10 days send a sample for counting via your vet or somewhere like here. http://www.westgatelabs.co.uk/ and take it from there.
It may be worth double checking his weight on a weighbride if possible to ensure you have been giving the correct (sufficient) dose. Also is he swallowing all of the dose?