I'm pretty sure Ivermectin has a withdrawal period for meat and eggs. Wazine does as well. Valbazen I believe is questionable. It doesn't have a withdrawal for other animals when slaughtered, but most still recommend a withdrawal period. Eprinex is an Ivermectin product that seems to work better than ivermectin and I believe does not have a withdrawal period.
I have found the Rooster Booster dewormer at Rural King. It does not have a withdrawal period and I believe they are one of the very few actually approved as a dewormer for chickens.