Bupivacaine is a local anesthetic commonly used to numb specific areas of the body during medical procedures. It works by blocking nerve signals in the targeted area, providing pain relief for surgeries, dental work, and labor. Bupivacaine is often preferred for its long-lasting effects compared to other anesthetics. This medication can be administered through injections or as an epidural, depending on the procedure. While generally safe, bupivacaine can have side effects, including allergic reactions or cardiovascular issues, so it is important for healthcare providers to monitor patients closely during its use.