Fasnil Syrup is a Levamisole based antiparasitic medicine. It is used against internal parasites like roundworms. Fasnil affects the neuromuscular system of the parasite, causes contraction of its muscles and paralysis, which leads to the death of parasites in the first 12-24 hours after administration, In the liver of animals levamisole, is transformed into oxy-mercapto et imidazolidine, which has a positive effect on the immune system of farm animals and birds. For Prevention & Control of • Immature & mature Liver fluke • Amphistomes & paramphistomes • Gastrointestinal nematodes • Lungworms • Nasal bots