Febantel [N-2-( [2,3-bis-(methoxycarbonyl)-guanidine] 5- phenylthio)-phenyl) -2-methoxyacetamide] is a new anthelmintic that is highly active against various species of nematodes and cestodes in rodents, sheep, cattle, and horses. In 1978, febantel was introduced to South Africa under the trade name of Rintal? as a sheep drench, and to New Zealand as a sheep and cattle drench, and the USA and Australia as a paste for horse[1].