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Ivermectin tablets, USP are indicated for the treatment of the following infections: Strongyloidiasis of the intestinal tract. Ivermectin tablets are indicated for the treatment of intestinal (i.e., nondisseminated) strongyloidiasis due to the nematode parasite Strongyloides stercoralis . This indication is based on clinical studies of both comparative and open-label designs, in which 64% to 100% of infected patients were cured following a single 200-mcg/kg dose of ivermectin. (See CLINICAL PHARMACOLOGY, Clinical Studies .) Onchocerciasis. Ivermectin tablets are indicated for the treatment of onchocerciasis due to the nematode parasite Onchocerca volvulus . This indication is based on randomized, double-blind, placebo-controlled and comparative studies conducted in 1,427 patients in onchocerciasis-endemic areas of West Africa. The comparative studies used diethylcarbamazine citrate (DEC-C). NOTE: Ivermectin tablets has no activity against adult Onchocerca volvulus parasites. The adult parasites reside in subcutaneous nodules which are infrequently palpable. Surgical excision of these nodules (nodulectomy) may be considered in the management of patients with onchocerciasis, since this procedure will eliminate the microfilariae-producing adult parasites.

Ivermectin tablets are contraindicated in patients who are hypersensitive to any component of this product.

Historical data have shown that microfilaricidal drugs, such as diethylcarbamazine citrate (DEC-C), might cause cutaneous and/or systemic reactions of varying severity (the Mazzotti reaction) and ophthalmological reactions in patients with onchocerciasis. These reactions are probably due to allergic and inflammatory responses to the death of microfilariae. Patients treated with ivermectin tablets for onchocerciasis may experience these reactions in addition to clinical adverse reactions possibly, probably, or definitely related to the drug itself. (See ADVERSE REACTIONS, Onchocerciasis .) The treatment of severe Mazzotti reactions has not been subjected to controlled clinical trials. Oral hydration, recumbency, intravenous normal saline, and/or parenteral corticosteroids have been used to treat postural hypotension. Antihistamines and/or aspirin have been used for most mild to moderate cases. Neurotoxicity with the use of ivermectin, including alteration of consciousness of variable severity (e.g., somnolence/drowsiness, stupor, and coma), confusion, disorientation and death, has been reported in patients without onchocerciasis or in patients with onchocerciasis in the absence of Loa loa infection. These reactions have generally resolved with supportive care and the discontinuation of ivermectin.