Clinical trial

Provided by: Healthwise
60% of users found this article helpful.

A clinical trial is research study on human volunteers designed to answer specific health questions. The purpose of a clinical trial is to find out whether a medication or treatment regimen is safe and effective against a specific condition or disease.

Clinical trials compare the effectiveness of the study medication or treatment against standard, accepted treatment or a placebo. Early trials (phase I) establish the safety, toxicity, and safe dosing ranges of a new treatment.

A clinical trial may be sponsored by a government agency, such as the National Institutes of Health, or a pharmaceutical or biotechnology company. All clinical trials are guided by government regulations to insure that participants are not likely to be harmed and that they fully understand the risks and benefits of participating.

Author:Jeannette Curtis
Caroline Rea, RN, BS, MS
Medical Review:Patrice Burgess, MD - Family Medicine
Adam Husney, MD - Family Medicine
Kathleen Romito, MD - Family Medicine
Last Updated: 05/25/2007

© 1995-2007, Healthwise, Incorporated, P.O. Box 1989, Boise, ID 83701. ALL RIGHTS RESERVED.

This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information. For more information, click here. Privacy Policy. How this information was developed.

Was this article helpful?
Tell us what you think.

Rate this article:
liked it no thanks

Filter By:

In the Spotlight

Dealing With An Emergency

Do you know what to do in an emergency? Do you have a family action plan?

Find out more »

Yahoo! Groups

Join the Conversation:

Join a Yahoo! Group and discuss topics with other members of the group.

See All First Aid Groups »

Yahoo! Health Videos

My Health

help

Tip of the Day

Provided by: RealAge

Tired of skin products that sound too good to be true -- and are? Then check out the only proven wrinkle reducer on the market: retinoids. Read More »

View All Tips »

Tell us what you think about Yahoo! Health - Send us your feedback