Final answer:
The key Rx name for a Fusion Inhibitor used in the treatment of HIV is enfuviritide. This drug prevents the fusion of HIV with host cell receptors, thwarting the entry of the virus into cells.
Step-by-step explanation:
The Rx names for Fusion Inhibitor drugs, specifically those used in the treatment of HIV, include enfuviritide. This antiviral medication works by blocking the fusion of HIV receptors to the coreceptors, particularly chemokine receptor type 5 (CCR5), which is required for virus entry into the cell. Other classes of antiretroviral drugs, like reverse transcriptase inhibitors, protease inhibitors, and integrase inhibitors, act at different stages of the HIV life cycle but are not classified as fusion inhibitors.
It's important to note that the substances listed in the reference like methotrexate (Abitrexate®), fluorouracil (Adrucil®), hydroxyurea (Hydrea®), mercaptopurine (Purinethol®), and thioguanine are not fusion inhibitors, but rather are various forms of chemotherapy agents or antiviral medications that work differently from fusion inhibitors. Similarly, medications like rivaroxaban (Xarelto) and dabigatran (Pradaxa) are anticoagulants and do not serve as fusion inhibitors.