Why do we have clinical trials?

Clinical trials advance medical knowledge and patient care. They help determine whether a new drug or treatment works well and safely in people, and if it improves patient outcomes over what current standard treatments achieve. They also can determine:

  • Which treatments are most effective for certain illnesses or groups of people
  • If a treatment being studied is as good as what is currently available, but causes fewer side effects
  • Whether it works for certain types of patients not helped by current treatments
  • Whether the benefits of the new treatment outweigh risks
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