Which of the following agents is listed in category X by the FDA for its history of causing birth defects among pregnant women?

Question

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Orlistat (Zenical) is listed in category X by the FDA for its history of causing birth defects among pregnant women. Category X drugs have been proven to cause fetal abnormalities and should not be used during pregnancy. Famotadine (Pepcid), sucalfrate (Carafate), and mesalamine (Asacol) are listed in category B by the FDA, which means that they have not been shown to cause harm to pregnant women or their fetuses in human studies. However, they should only be used during pregnancy if the benefits outweigh the risks and under the guidance of a healthcare provider.

Which of the Following Agents Is Listed in Category X