dornase alfa

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dornase alfa

 [dor´nāz al´fah]
recombinant human deoxyribonuclease I (DNase I) used to reduce the viscosity of sputum in cystic fibrosis patients; administered by inhalation.

dornase alfa


Pharmacologic class: Recombinant human deoxyribonuclease I

Therapeutic class: Cystic fibrosis agent, mucolytic enzyme, respiratory inhalant

Pregnancy risk category B


Selectively cleaves to DNA in sputum, decreasing viscosity of pulmonary secretions


Inhalation solution: 2.5-mg ampule (1 mg/ml)

Indications and dosages

To reduce respiratory tract infections and improve pulmonary function in patients with cystic fibrosis

Adults and children: One ampule (2.5 mg) inhaled once daily; some patients may benefit from twice-daily dosing. Safety and efficacy of daily administration haven't been demonstrated for longer than 12 months.


• Hypersensitivity to drug, its components, or products derived from Chinese hamster ovary cells


Use cautiously in:
• pregnant or breastfeeding patients.


• Don't shake, dilute, or mix with other drugs.
• Use only with approved nebulizer.
• Discard cloudy or discolored solution.

Adverse reactions

CV: chest pain

EENT: conjunctivitis, rhinitis, pharyngitis, hemoptysis, voice changes

Respiratory: dyspnea, increased sputum, wheezing

Skin: rash, urticaria, pruritus

Other: hypersensitivity reactions


None known

Patient monitoring

• Assess patient periodically. Report improvement in dyspnea and sputum clearance.
• Monitor for signs and symptoms of hypersensitivity reaction.

Patient teaching

• Teach patient how to use nebulizer.
• Instruct patient to report rash, hives, and itching.
• As appropriate, review all other significant adverse reactions mentioned above.

dornase alfa

/dor·nase al·fa/ (dor´nāz al´fah) recombinant human deoxyribonuclease I (DNase I) used to reduce the viscosity of sputum in cystic fibrosis.

dornase alfa

(dôr′nās′ ăl′fə, -nāz′)
A genetically engineered enzyme used to hydrolyze the DNA in bronchial mucus, facilitating its expectoration, in the treatment of cystic fibrosis.

dornase alfa

a natural enzyme that depolymerizes DNA molecules. Because as much as 70% of the solid matter of purulent material consists of viscous DNA derived from the nuclei of neutrophils, dornase is used in respiratory therapy of disease such as cystic fibrosis to help break down purulent secretions in the airways. Dornase is produced with recombinant DNA technology in Chinese hamster ovary cells.

dornase alfa

A drug used to remove sticky and tenacious secretions from the air passages of people suffering from CYSTIC FIBROSIS. A brand name is Pulmozyme.

dornase alfa

(dor´nās al´fə),
n brand name: Pulmozyme;
drug class: recombinant human deoxyribonuclease (DNase);
action: reduces sputum viscosity;
uses: cystic fibrosis; reduces incidence of pulmonary infection, improves pulmonary function.