Nitazoxanide is Used for treating parasitic infections, including Cryptosporidium parvum, in immunocompromised mammals. It was first introduced by Romark Laboratories in its drug Alinia on Nov 22, 2002. 4 different companies have introduced drugs containing Nitazoxanide.

Nitazoxanide Patents

Given below is the list of patents protecting Nitazoxanide, along with the drug name that holds that patent and the company name owning that drug.

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Drug Used in	Drug Patent Number	Drug Patent Title	Drug Patent Expiry	Drug Owner
Alinia	US5965590	Method for treatment of opportunistic infections with pharmaceutical compositions of tizoxanide and nitazoxanide	Jul 03, 2017 (Expired)	Romark
Alinia	US5968961	Pharmaceutical compositions of tizoxanide and nitazoxanide	May 07, 2017 (Expired)	Romark
Alinia	US6117894	Acid stabilized pharmaceutical compositions of tizoxanide and nitazoxanide	May 07, 2017 (Expired)	Romark
Alinia	US6020353	2-(hydroxy)-N-(5-nitro-2-thiazolyl) benzamide	Sep 18, 2014 (Expired)	Romark
Alinia	US5578621	Benzamide derivatives	Sep 08, 2014 (Expired)	Romark
Alinia	US6020353	2-(hydroxy)-N-(5-nitro-2-thiazolyl) benzamide	Sep 08, 2014 (Expired)	Romark
Alinia	US5578621	Benzamide derivatives	Nov 26, 2013 (Expired)	Romark

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Nitazoxanide's Family Patents

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Nitazoxanide Generic API Manufacturers

Several generic applications have been filed for Nitazoxanide. The first generic version for Nitazoxanide was by Rising Pharma Holdings Inc and was approved on Nov 27, 2020. And the latest generic version is by Annora Pharma Private Ltd and was approved on Apr 15, 2025.

Given below is the list of companies who have filed for Nitazoxanide generic, along with the locations of their manufacturing plants worldwide.