xanthine derivatives-oral (cont.)
DRUG INTERACTIONS: Inform your doctor about all the medicines you use (both prescription and nonprescription), especially if you take: cimetidine, erythromycin, troleandomycin, mexiletine, tacrine, barbiturates, disulfiram, rifampin, thiabendazole, birth control pills, rifabutin, ticlopidine, quinolone antibiotics, beta-blockers, phenytoin, fluvoxamine (an SSRI antidepressant), St John's wort. Do not start or stop any medicine without doctor or pharmacist approval.
OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include unusually fast or slow heartbeat, loss of appetite, nausea/vomiting, sleeplessness, irritability, restlessness, headache, increased thirst, fever, ringing in ears, delirium, muscle twitching or weakness, seizures, sweating, or fast breathing.
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