The answer to this question would be: <span>Nitazoxanide
</span><span>Nitazoxanide is a broad antiparasitic drug that can be used to treat infection of Giardia lamblia or Cryptosporidium parvum. It also a broad antiviral can be used for viral infection. Another drug that can be used for Giardia infection would be Metronidazole.</span>
