Action

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

Availability

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.

Contraindications

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

Precautions

Use cautiously in:

• pregnant or breastfeeding patients.

Administration

• 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

Interactions

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.