Lung Function Clinical Study Results | CAYSTON®

CAYSTON may help improve lung function

CAYSTON provided results doctors measured by improved FEV1 lung function

The clinical study in CF patients with Pa also measured the lung function of people who took CAYSTON compared with people who took placebo. Both groups used the FEV1 test.

After 28 days, people who took CAYSTON had an average 10% increase of their starting FEV1 (L) compared with people in the placebo group. This difference decreased to about 6% 2 weeks after stopping CAYSTON.

CAYSTON improved lung function by 10% compared with placebo

CAYSTON lung function chart

Click here for a list of common side effects.

Kevin, treated with CAYSTON

“When I'm on CAYSTON, I notice a positive difference in my coughing and see a boost in my lung function.”


(Individual results may vary.)

You can track your own lung function through the free My Cayston Partner® educational support program. Click here to learn more about the My Cayston Partner® program.

Learn About Common Side Effects