Ivermectin, moxidectin, and doramectin are in which class?

Ivermectin, moxidectin, and doramectin are classified as avermectins. This class of drugs is derived from a natural product called avermectin, which is produced by the fermentation of the bacterium Streptomyces avermitilis. Avermectins are known for their efficacy as antiparasitic agents, particularly in treating a variety of internal and external parasites in both veterinary and human medicine.

The reason avermectins are significant is due to their ability to disrupt the neuromuscular function of parasites. This disruption leads to paralysis and death of the parasite, making these drugs effective in controlling infestations. In the veterinary field, they are commonly used to manage conditions caused by nematodes, ectoparasites like mites and lice, and other types of parasites.

While the other options include terms that relate to different classes of medications, they do not accurately describe the class to which ivermectin, moxidectin, and doramectin belong. Therefore, selecting avermectin as the correct class reflects an accurate understanding of these specific antiparasitic medications.