Who Should Not Take Nitazoxanide? Nitazoxanide 500 mg is a broad-spectrum antiparasitic and antiviral medication commonly prescribed to treat infections like cryptosporidiosis and giardiasis. While it is generally well-tolerated and effective, it is not suitable for everyone. Certain individuals should avoid taking Nitazoxanide due to potential risks, interactions, or underlying health conditions. This article provides an...