Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Never use theophylline in larger amounts, or for longer than prescribed.
Theophylline is not a rescue medicine for asthma or bronchospasm attacks. Use only fast-acting inhalation medicine for an attack. Seek medical attention if your breathing problems get worse quickly, or if you think your medications are not working as well.
Swallow the capsule or tablet whole and do not crush or chew it. You may break a scored tablet in half if needed to get the correct dose.
Some tablets are made with a shell that is not absorbed or melted in the body. Part of this shell may appear in your stool. This is normal and will not make the medicine less effective.
Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).
Your dose and the number of times you take theophylline daily will depend on the reason you are taking this medication.
Follow your doctor's instructions about whether to take your medication with food or on an empty stomach.
Your dose needs may change if you are ill, or if you switch to a different brand, strength, or form of this medicine. Avoid medication errors by using only the form and strength your doctor prescribes.
You will need regular medical tests to be sure you are using the right dose. Do not change your dose or dosing schedule without your doctor's advice.
Theophylline doses are based on weight in children. Your child's dose needs may change if the child gains or loses weight.
This medicine can affect the results of certain medical tests. Tell any doctor who treats you that you are using theophylline.
Store at room temperature away from moisture, heat, and light.
 Detailed Theophylline dosage information
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What happens if I miss a dose?
Skip the missed dose and use your next dose at the regular time. Do not use two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. Seizures caused by a theophylline overdose can cause death or permanent brain damage.
Theophylline overdose can occur if you accidentally take too much at one time. Overdose can also occur slowly over time if your daily doses are too high. To be sure you are using the correct dose, your blood will need to be tested often.
Overdose symptoms may include severe nausea and vomiting, seizure, slow heart rate, weak pulse, or fainting.
