Always follow your doctor’s prescribed dosage. Theophylline dosage varies greatly depending on your individual needs, age, and the severity of your condition. Typical dosages range from 6 to 12 mg/kg/day, usually administered in divided doses.
Oral Administration
If taking theophylline orally, take it with food to minimize stomach upset. Consistency is key – take your medication at the same time each day to maintain consistent blood levels.
- Never crush or chew extended-release tablets; swallow them whole. Report any significant changes in your health or symptoms to your doctor immediately.
Monitoring Blood Levels
Regular blood tests are necessary to monitor your theophylline levels. This ensures the dosage remains within the therapeutic range (typically 5 to 15 mcg/mL). Levels that are too high or too low can cause adverse effects.
High levels (toxicity) can lead to nausea, vomiting, rapid heartbeat, and seizures. Low levels mean the medication isn’t working effectively.
Possible Side Effects
Common side effects include headache, nausea, insomnia, and stomach upset. Less common but serious side effects include irregular heartbeat and seizures. Contact your physician immediately if you experience any concerning symptoms.
Interactions
Theophylline can interact with other medications. Inform your doctor about all medications, supplements, and herbal remedies you are taking, to avoid potential interactions. This includes smoking, which significantly impacts theophylline metabolism.
Missed Dose
If you miss a dose, take it as soon as you remember, unless it’s almost time for your next dose. Never double up on doses.


