Search info


I heard about a clinical trial for my illness, and it was called a treatment trial. Can you tell me what a treatment trial is?


The National Institutes of Health lists five different types of clinical trials:

Diagnostic: These trials are conducted to find better tests or procedures for diagnosing a particular disease or condition.
Prevention: These trials are conducted to find better ways to prevent disease in people who have never had the disease or to prevent a disease from returning. These approaches may include medicines, vaccines, vitamins, minerals, or lifestyle changes.
Quality of Life: These trials explore ways to improve comfort and the quality of life for people living with a chronic illness.
Screening: These trials test the best way to detect certain diseases or health conditions.
Treatment: These trials test experimental treatments, new combinations of drugs, or new approaches to surgery or radiation therapy.

Get information about clinical trials at, a service of the National Institutes of Health.

Back to Ask a Pharmacist


Answers to questions regarding information about medications or health conditions are not for diagnostic or treatment purposes and are not conclusive as to the presence or absence of any health condition. Consult your physician for diagnosis and treatment of your medical condition. The information provided is not a substitute for medical advice. Advances in medicine may cause this information to become outdated, invalid or subject to debate. Professional opinions and interpretations of the scientific literature may vary. Walgreens' terms of use and general warranty disclaimer apply to all services provided. If you are in need of immediate medical attention, contact your physician, poison control center or emergency medical professional. If you need to speak with a pharmacist for non-emergency matters, contact your local Walgreens pharmacist or call a pharmacist toll-free at 1 (877) 250-5823.

Balance Rewards for Healthy Choices

20 Points
20 Points

Now you can track your blood pressure and blood glucose.

Start earning points Go Arrow