Approved by the FDA in 1997, Delavirdine is an antiviral medicine that works by inhibiting the multiplication of human immunodeficiency virus (HIV) in the patient’s body. It is important, though, to remember that this drug does not cure HIV or AIDS, nor does it keep the patient from passing this virus to other people. It is also important to remember that Delavirdine must be administered in combination with other antiviral medications. When it comes to the common side effects, they include diarrhea, nausea, headache, and mild skin rash. You should, nonetheless, call your doctor if you have chest pain, cold sores, trouble swallowing or speaking, or if you have swelling in your neck/throat. According to drugs.com, it is not known whether Delavirdine will harm an unborn baby, although HIV can be passed to the baby if it is not properly treated during pregnancy. In addition, women who have HIV or AIDS should not breastfeed even if the baby is born without this virus.