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Theophylline
Pronounced thee-OFF-i-lin
Brand names: Theo-24, Theochron
Type: Bronchodilator (xanthine) · All Lung & Breathing Medicines
What Theophylline is used for
- Asthma maintenance when other treatments are not enough
- COPD maintenance when other treatments are not enough
◆ Kidney note
Levels are monitored closely in illness; liver problems and heart failure raise its level more than kidney problems do.
Common side effects
- Nausea
- Headache
- Trouble sleeping
- Rapid heartbeat
- Shakiness
Important cautions
- The safe range is narrow — blood levels are checked, and many medicines plus smoking changes alter its level
- Toxicity causes vomiting, racing heart, and seizures — report persistent nausea or palpitations promptly
How it comes
Extended-release tablets and capsules, liquid, injection (hospital). This guide lists forms only — it never lists strengths or doses.
Related medicines — Lung & Breathing Medicines
Condition guides on MedicalVideos.com
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.