What conditions are Uniphyllin prolonged-release tablets containing theophylline hydrate indicated to treat?

Uniphyllin prolonged-release tablets (theophylline hydrate) treat and prevent bronchospasm associated with asthma, chronic obstructive pulmonary disease and chronic bronchitis, and treat left ventricular and congestive cardiac failure in adults and children aged 6 years and above; theophylline should not be first-choice asthma treatment in children.