
Enbrel (etanercept) is a biologic TNF inhibitor used to treat chronic inflammatory conditions such as rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and plaque psoriasis. It functions by binding to TNF-α and TNF-β, blocking their interaction with cell surface receptors, thereby reducing inflammation and disease progression. Enbrel is administered subcutaneously and is available in multiple formulations, including prefilled syringes and autoinjectors.
Key safety considerations include an increased risk of serious infections, malignancies, and hypersensitivity reactions. Patients must be screened for latent tuberculosis and monitored for infections during therapy. Enbrel is contraindicated in sepsis and requires careful consideration in patients with heart failure, demyelinating disorders, or hepatitis B infection.