How Pulmozyme® (dornase alfa) CF Treatment Works

How Pulmozyme works

In laboratory studies, Pulmozyme made mucus thinner and looser, which can make it easier to clear your lungs. It works to fight CF, even when you can't feel it.

Cystic fibrosis (CF) often requires several different medicines as part of a treatment routine. Not all medicines work the same, so your doctor will prescribe multiple therapies to help you fight CF.

Watch the video below for more information about the different roles cystic fibrosis treatments play.

Consider Pulmozyme a standard part in the fight against CF

Pulmozyme is a commonly prescribed medicine that is unique in the way it works. Picture how a pair of scissors can be used to cut something into smaller pieces. Similarly, laboratory studies show that Pulmozyme cuts apart extracellular DNA by acting like an enzyme* naturally found in the lungs. By cutting this extracellular DNA, Pulmozyme helps make the thick, sticky mucus that your lungs produce thinner and looser.

What do other cystic fibrosis medicines do?

CF is a complex disease. Your doctor will prescribe other medicines to take in addition to Pulmozyme. These medicines can include:

  • Antibiotics

    Help prevent and treat infections

  • Bronchodilators

    Help open airways

  • Hydrators

    Help increase moisture in thick mucus

  • Airway Clearance Techniques

    Help physically loosen and move mucus out of the airway

  • CFTR Modulators

    Help keep a balance of salt and water in the lungs

Taking all your treatments helps manage CF on multiple fronts

Your doctor may have given you several different medicines and each has a different purpose. You should always take Pulmozyme as prescribed. In laboratory studies, Pulmozyme helped make mucus thinner and looser. On the next page, you’ll learn why it’s important to take your Pulmozyme as directed.

Read more about the importance of Pulmozyme ›

*Enzymes are proteins created by the body to help speed up chemical reactions (such as the breakdown of molecules).

CFTR = Cystic Fibrosis Transmembrane Conductance Regulator

Indication and Usage

Pulmozyme (dornase alfa) is indicated for daily administration along with standard therapies for the management of cystic fibrosis (CF) patients to improve pulmonary function.

In CF patients with an FVC ≥ 40% of predicted, daily administration of Pulmozyme has also been shown to reduce the risk of respiratory tract infections requiring injectable antibiotics.

Important Safety Information

Pulmozyme should not be used in patients who are allergic to any of its ingredients.

Patients may experience the following when using Pulmozyme: change in or loss of their voice, discomfort in the throat, rash, chest pain, red watery eyes, runny nose, lowering of lung function, fever, indigestion, and shortness of breath. There have been no reports of severe allergic reactions caused by the administration of Pulmozyme. Mild to moderate hives and mild skin rash have been observed and have been short-lived.

Pediatric Use

The safety and effectiveness of Pulmozyme have been established in patients 5 years of age and older. While clinical trial data are limited in patients younger than 5 years of age, the use of Pulmozyme should be considered for pediatric CF patients who may experience potential benefit in lung function or who may be at risk of respiratory tract infection.

The safety of Pulmozyme given by daily inhalation for 2 weeks has been studied using 98 CF patients with 65 of them aged 3 months to <5 years (younger group) and 33 aged 5 years to <10 years (older group). The PARI BABY™ reusable nebulizer (which uses a face mask instead of a mouthpiece) was used in patients who were unable to show that they could breathe in or out using their mouth throughout the entire treatment period. Overall, the kind of side effects observed in children was similar to those seen in larger trials in older patients.

You are encouraged to report side effects to Genentech and the FDA. You may report side effects to the FDA at 1-800-FDA-1088 or You may also report side effects to Genentech at 1-888-835-2555.

For additional Important Safety Information, please click here for the Pulmozyme full Prescribing Information. If you have questions, please discuss them with your CF Care Team.