Steve -
I'm sure you are giving a "bute" paste (or horse aspirin). Ask your vet for the flavored powder. I find that apple flavored bute powder works well. We sprinkle it on the grain and shake to coat most of the grain.
MG
"There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies."
Tony Hoare
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.