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Respiratory Drug Data - A-Z (English)

Drug Class Description

Xanthines (bronchodilators).

Generic Name

Theophylline - bronchospasm

Drug 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

Napp

Drug Availability

(P)

Updated

18 June 2009

Drug Languages: en it fr de es no nl pt se

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