***THIS PRODUCT IS DISCONTINUED*** Levamisole Hydrochloride is a broad-spectrum anthelmintic and is effective against the following nematode infections in swine:Large Roundworms: (Ascaris suum). Nodular Worms: (Oesophagostomum spp.) Lungworms: (Metastrongylus spp.) Intestinal Threadworms: (Strongyloides ransomi.) For use in drinking water.