Theophylline CR is a bronchodilator used to prevent and treat specific symptoms like wheezing, shortness of breath and breathing difficulties associated with asthma , emphysema , chronic bronchitis and other types of lung diseases.

This drug works by relaxing and opening the air passages in the lungs in order to make it easier to breathe.

Theophylline CR is taken orally in the form of tablets, capsules, a solution or syrup. It is usually taken every 6, 8, 12 or 24 hours, depending on your doctors directions.

Common side effects associated with this type of medication include upset stomach, diarrhea, abdominal pain, insomnia and irritability. If the side effects persist, contact your doctor for assistance.

Occasionally, Theophylline CR may be prescribed for other purposes, as suggested by your doctor.

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