Mebendazole Syrup offered by our company, is used for treating pinworm, whipworm, roundworm, and hookworm infections. This syrup works by killing the worms. This syrup is taken twice a day, in the morning and evening, for 3 days or as a single dose. This syrup is taken as per the doctorâs prescription. Mebendazole Syrup acts as a an antiworm medication, which kills parasites. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Do not take more or less of it or take it more often than prescribed by your doctor.