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Drug Class Description
Xanthines (bronchodilators).Generic Name
Theophylline - bronchospasmDrug Description
200 mg white scored capsule- shaped sustained-release tablets marked U200; 300 mg white scored capsule-shaped sustained-release tablets marked U300; 400 mg white scored capsule-shaped sustained- release tablets marked U400, tablet name and NAPP.Presentation
Tablets, theophylline 200mg , 300mg , 400mg .Indications
Bronchospasm in chronic bronchitis, asthma and chronic obstructive airways disease.
Adult Dosage
Under 70 kg, 200 mg 12 hourly for one week, then 300 mg 12 hourly; over 70 kg, 200 - 300 mg 12 hourly for one week, then 400 mg 12 hourly.Child Dosage
Under 7 years, not recommended; over 7 years, 9 mg/kg 12 hourly.Contra Indications
Concomitant use with ephedrine in children.Special Precautions
Cardiac or liver disease, peptic ulceration. Pregnancy, lactation.Interactions
Clearance of xanthines is reduced by allopurinol, carbimazole, cimetidine, ciprofloxacin, clarithromycin, diltiazem, disulfiram, erythromycin, fluconazole, fluvoxamine, interferon, isoniazid, isoprenaline, methotrexate, mexiletine, nizatidine, norfloxacin, oxpentifylline (pentoxifylline), propafenone, propranolol, ofloxacin, tiabendazole (thiabendazole), verapamil, viloxazine. Measure plasma levels, dose reduction of xanthine may be necessary to avoid side effects. Clearance of xanthines is increased by aminoglutethimide, carbamazepine, moracizine, phenytoin, rifampicin, sulfinpyrazone (sulphinpyrazone), barbiturates, smoking, alcohol consumption. Dose of xanthine may need to be increased to achieve therapeutic effect.Adverse Reactions
Nausea, gastric irritation, headache, CNS stimulation.Manufacturer
NappDrug Availability
(P)Updated
18 June 2009