The respiratory system is complex.

The respiratory (breathing) system can be affected by many different kinds of disease. We seek to find ways to help this system work better when affected by disease.

Chronic cough

Although not life-threatening, chronic (long-lasting) cough can affect people’s social and mental well-being. We’ve dedicated ourselves to researching treatments for those who live with a chronic cough.


RSV (respiratory syncytial virus) is a common respiratory virus that can sometimes lead to more severe infections such as bronchiolitis and pneumonia, especially in very young children and the elderly. MSD is committed to researching potential new prevention options.

There is a lot to consider when deciding whether to participate in a clinical trial. Any clinical trial includes risks which the study doctor will review with you. Make sure you understand the risks before participating.

Asian male doctor talking to patient

Resources for patients

For help understanding clinical trial listings and for other resources, visit our Patient Resources section.
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About clinical trials

Learn what clinical trials are, how they work, and if you may be eligible to participate.
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