Fuzeon (generic: enfuvirtide) is a prescription medication used to treat human immunodeficiency virus (HIV). It is always used in combination with other medications. Fuzeon belongs to a group of drugs called HIV fusion inhibitors. It works by stoppin HIV from entering human cells. HIV must enter human cells in order to replicate.

This medication comes in an injectable form. It is injected just under the skin of the upper arm, stomach area, or thigh, twice daily.

Common side effects of Fuzeon include redness, pain, and other effects at the injection site. Other common side effects include weight loss, sinus infection and dizziness. Do not drive a car or operate machinery until you know how this medication affects you.