How does theophylline work?
Theophylline relaxes muscles around the airways and reduces inflammation, helping to open up the lungs and ease breathing difficulties.
What is theophylline used to treat?
Theophylline is commonly prescribed for:
- Asthma (to help prevent symptoms and attacks)
- Chronic obstructive pulmonary disease (COPD)
- Chronic bronchitis
- Emphysema
Who can take theophylline?
Theophylline is suitable for adults and children, but the dosage varies based on age, weight, and medical condition. Always follow your doctor’s advice carefully.
Who might not be able to take theophylline?
Theophylline may not be suitable if you:
- Have heart rhythm disorders
- Have epilepsy or seizures
- Have liver or kidney problems
- Have thyroid problems
- Have a history of stomach ulcers
Can I take theophylline if I’m pregnant or breastfeeding?
Theophylline can sometimes be used during pregnancy or breastfeeding if advised by your doctor, who will monitor your condition closely.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s nearly time for your next dose, skip the missed one—do not take two doses at once.
How effective is theophylline?
When used as prescribed, theophylline is effective at controlling symptoms of asthma and COPD, improving breathing, and reducing the frequency of flare-ups.
What should I do if I take too much?
Taking too much theophylline can cause nausea, vomiting, tremors, rapid heartbeat, or seizures. If you think you’ve taken too much, seek medical help immediately.
What dose of theophylline is usually taken?
- Adults and children over 12: Typically between 200mg–600mg per day, taken in divided doses
- Children under 12: Dose calculated based on weight and closely supervised by a doctor
Always follow your doctor’s instructions or the information provided with your medicine.
Powered by pharmacies
With over 1,700 pharmacy partners across the UK, you can get the help you need, wherever you are based.
Our website and mobile app make it easy and convenient to manage your health needs and book services at a pharmacy nearby.
What are the side effects of theophylline?
Common side effects include:
- Nausea or stomach upset
- Headache
- Rapid or irregular heartbeat
- Restlessness or trouble sleeping
Serious side effects, like seizures, irregular heartbeat, or severe allergic reactions, require immediate medical attention.
How should I take theophylline?
Theophylline usually comes as tablets, capsules, or liquid. Tablets or capsules should be swallowed whole with water—never crush or chew unless instructed otherwise.
When should theophylline be taken?
Take theophylline exactly as prescribed, usually once or twice daily. Try to take it at the same time each day to maintain steady levels in your body.
What are the brand names for theophylline?
Theophylline is available as a generic medicine, but branded versions include:
- Uniphyllin
- Nuelin SA
- Slo-Phyllin
Final thoughts
Theophylline is an effective treatment to help manage asthma and COPD symptoms. Always take it exactly as advised by your doctor and speak with a healthcare professional if you have concerns or experience side effects.