<prompt> Ivermectin is aCysticideTaenicideFilaricideAnti-amoebic  <response>: Ivermectin is the drug of choice for Strongyloides and Onchocerca volvulus. It is a filaricide effective against W. bancrofti and malayi.Ivermectin, a semisynthetic macrocyclic lactone, a mixture of avermectin B1a and B1b. It is derived from the soil actinomycete Streptomyces avermitilisIvermectin is used only orally in humans. The drug is rapidly absorbed, reaching maximum plasma concentrations 4 hours after a 12mg dose. Ivermectin appears to paralyze nematodes and ahropods by intensifying g-aminobutyric acid GABA-mediated transmission of signals in peripheral nervesReference: Katzung Pharmacology; 13th edition; Chapter 53; Clinical Pharmacology of the Antihelminthic Drugs 