Sykes Big-L for Poultry & Pigs is a highly efficient, easy to use and cost effective way to worm poultry and pigs. It can be added to drinking water, feed or used as a drench and is most effective against Round Worm in both pigs and poultry. Active Contstituents: Levamisole Hydrochloride 16g/Kg Suitable For • Poultry & other birds • Pigs