Immunotherapy

Treatment that modifies, stimulates, suppresses, or otherwise harnesses the immune system to prevent or treat disease.

Immunotherapy is used for several diseases, particularly certain cancers and immune-related conditions. In cancer treatment, some immunotherapies help the immune system recognize and attack cancer cells more effectively, while others modify specific immune pathways.

Because immunotherapy acts through the immune system, it can produce distinctive effects and side effects. Its effectiveness varies considerably according to the disease and treatment being used.

COMMONLY CONFUSED WITH

  • Chemotherapy: directly uses cytotoxic medicines to kill or inhibit rapidly dividing cells.
  • Targeted therapy: acts on specific molecular targets involved in disease, particularly cancer.
  • Vaccination: stimulates an immune response primarily to establish protection against a specific infectious disease; it is not synonymous with therapeutic immunotherapy.

SEE ALSO

Clinical & Educational Context

Discussed in Health Articles & Guides

Explore how "Immunotherapy" is covered across our evidence-based editorial guides:

1 Article
The Hard Parts of Medicine

Polypharmacy: What Really Happens When You Take Multiple Medicines

Polypharmacy, the use of multiple medicines by one person is becoming increasingly common as people live longer and more people...