Uses

Used for treatment of reversible airway obstruction associated with asthma, chronic bronchitis, and emphysema.

Do not use if

Contraindicated in patients with hypersensitivity to theophylline or formulation components.

Nausea, vomiting, headache, insomnia, palpitations, and tremor may occur.

Has a narrow therapeutic range and may cause serious arrhythmias or seizures at toxic levels.

Methylxanthine bronchodilator that relaxes airway smooth muscle and may reduce airway responsiveness.

Store at 20–25°C in a light-resistant container.