THEOPHYLLINE-ORAL 24 HOUR TABLET, Uni-Dur (cont.)
SIDE EFFECTS: Dizziness, headache, lightheadedness, heartburn, stomach pain, loss of appetite, restlessness, nervousness, sleeplessness or increased urination may occur. If any of these symptoms persist or worsen, inform your doctor. Inform your doctor if you experience: chest pain, rapid or irregular heartbeat, confusion, severe stomach pain, breathing difficulties. In the unlikely event you have a serious allergic reaction to this drug, seek immediate medical attention. Symptoms of a serious allergic reaction include: rash, itching, swelling, severe dizziness, trouble breathing. If you notice other effects not listed above, contact your doctor or pharmacist.
PRECAUTIONS: Tell your doctor your medical history, especially of: heart disease, stomach/intestinal ulcers, liver disease, recent fever, thyroid problems, seizures, drug or food allergies. This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. Theophylline is excreted into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.
DRUG INTERACTIONS: Inform your doctor about all the medicines you may use (both prescription and nonprescription), especially of: cimetidine, erythromycin, troleandomycin, mexiletine, tacrine, barbiturates, disulfiram, rifampin, thiabendazole, birth control pills, rifabutin, ticlopidine, quinolone antibiotics, beta- blockers, phenytoin, halothane (an anesthetic), zileuton, allopurinol, lithium, carbamazepine, St John's wort, fluvoxamine (an SSRI antidepressant). Avoid drinking large amounts of beverages containing caffeine (coffee, tea, colas) or eating large amounts of chocolate. Caffeine can increase side effects of this medication. Smoking affects this medication. Be sure to tell your doctor if you smoke or use nicotine. Inform your doctor if you stop smoking. Your dose may need to be adjusted. Do not start or stop any medicine without doctor or pharmacist approval.
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