Enbrel is a prescription medication used to treat autoimmune conditions such as rheumatoid arthritis, psoriasis, and ankylosing spondylitis. It works by blocking a protein called tumor necrosis factor (TNF), which plays a key role in inflammation and immune responses. By inhibiting TNF, Enbrel helps reduce pain, swelling, and joint damage. Enbrel is typically administered as a subcutaneous injection, often once or twice a week, depending on the condition being treated. Common side effects may include injection site reactions, headaches, and increased risk of infections. Patients should consult their healthcare provider for personalized advice and monitoring.