Natoa 100mg Tablets 6'sNatoa 100mg tablet contain Mebendazole which is an antiparasitic medication that treats infections of worms, like pinworm, hookworms, roundworms or other parasites. Pinworms, also called threadworms, live in the intestines and rectums of infected people. It causes anal itching and sleeplessness. Dosage For treatment of pinworm infections, the medication is usually given as a single dose. If necessary, a second treatment may be given in a few weeks.