Which medications in the drug class Antiparasitic agents are used in the treatment of Esophageal Motility Disorders?

Updated: Dec 29, 2017
  • Author: Eric A Gaumnitz, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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Antiparasitic agents

For reduction in parasitemia and improvement of clinical signs and symptoms of Chagas disease.

Nifurtimox (Lampit)

5-nitrofuran derivative that is the current drug of choice in the United States for treatment of acute Chagas disease (American trypanosomiasis) due to T cruzi infection. Although the use of this drug is effective in reducing or eliminating parasitemia and clinical symptoms in acute disease, whether chronic sequelae are reliably prevented is unclear. In the chronic stage, a long-term parasitological cure may not be achieved, and the drug may not alter the course of the disease significantly.

Dose adjustments may be indicated in renal or hepatic disease. The toxicity of nifurtimox also is a limitation, and geographic variations in response to nifurtimox in patients with chronic disease have been reported.

Benznidazole (Radanil, Rochagan, Ragonil)

A 2-nitroimidazole derivative that has inhibitory effect on protein synthesis and ribonucleic acid synthesis in T cruzi cells.

Benznidazole chemotherapy has been recommended as an alternative choice for treatment of the acute and indeterminate phases of Chagas disease, but it does not appear to offer a significant efficacy or toxicity advantage over nifurtimox. Benznidazole may be preferable in some regions based on experience with local strains. The propensity of both of these agents to induce chromosomal aberrations requires further study.

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