Theophylline
Theo-24 is a brand-name bronchodilator containing theophylline, used to prevent and treat respiratory symptoms such as wheezing and shortness of breath caused by asthma and other chronic lung conditions. It is typically prescribed for long-term maintenance therapy in patients who require ongoing airway management.
Theo-24 is a long-acting bronchodilator used to prevent asthma attacks and manage chronic respiratory conditions by relaxing airway muscles.
Key facts at a glance
- RxNorm
- 203388
- Generic
- Theo-24
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Theo-24 is indicated for the prevention and symptomatic treatment of asthma, as well as for chronic obstructive pulmonary disease (COPD) and other conditions involving reversible bronchospasm. It is used as a maintenance therapy rather than for acute symptom relief.
Theo-24 contains theophylline, a methylxanthine derivative that relaxes smooth muscles in the airways (bronchi), allowing them to widen and making breathing easier. It may also improve respiratory muscle function and reduce airway sensitivity to stimuli.
Theophylline has a narrow therapeutic index, meaning the difference between therapeutic and toxic doses is small. Regular blood monitoring may be required. Common side effects include nausea, headache, insomnia, and tachycardia. Patients should avoid exceeding prescribed doses and inform their doctor of all medications, as many drugs interact with theophylline.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy