immunosuppressant

/ˌɪmjənoʊsəˈprɛsənt/
noun
  1. A drug or substance that reduces the body's natural defense system (immune system) to prevent it from attacking something, such as a transplanted organ.
    • Some immunosuppressants are also used to treat severe autoimmune diseases.
    • After his kidney transplant, he had to take an immunosuppressant every day.
    • The doctor prescribed a new immunosuppressant to help control the patient's condition.
adjective
  1. Describing something that reduces the activity of the body's immune system.
    • The drug's immunosuppressant properties help calm the overactive immune response.
    • Certain viruses have immunosuppressant effects on the body.
    • The patient is on immunosuppressant therapy to prevent organ rejection.
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