Combantrin kills threadworms and the rare worms, roundworm and hookworm, in just one hit. All it takes is one tablet or square, once only for each member of your family, regardless of body weight. Dose: One chocolate square, with or without food will kill threadworm in adults and children from 2 years of age. Each square contains 100mg Mebendazole. There are often no symptoms but the common signs of threadworm infestation are persistant scratching of the bottom, restless sleep, loss of appetite and irritability. If pregnant consult your doctor prior to use. If roundworm, hookworm or whipworm are suspected seek medical advice. Free of gluten and artificial colours. Contains Lactose and sucrose..