Aminophylline


Generic Medicine Info
Administration
Should be taken on an empty stomach. Take on an empty stomach at least 1 hr before or 2 hr after meals.
Contraindications
Acute porphyria. IV: Concomitant use with other xanthine drugs. Oral: Concomitant use with ephedrine (in children <6 years or <22 kg).
Special Precautions
Patient with history of seizure, active influenza infection or undergoing influenza immunisation, acute febrile illness, cardiac arrhythmias or other CV disease, chronic alcoholism, active or history of peptic ulcer, thyroid disorder, glaucoma, diabetes mellitus, severe hypoxaemia, sepsis with multiorgan failure, shock, hypertension, cystic fibrosis, acute pulmonary oedema, cor pulmonale, compromised circulatory function. Simultaneous administration by >1 route/preparation. Not recommended for infants <6 months. Avoid extravasation (IV). Smokers. Renal and hepatic impairment. Children and elderly. Pregnancy and lactation. Monitoring Parameters Monitor serum theophylline levels following initiation of treatment and before increasing the dose, in the presence of signs or symptoms of toxicity, when new or worsening of illness occurs, during changes in treatment regimen; changes in fluid balance, electrolyte concentrations, or acid-balance (during prolonged use). For oral maintenance, measure theophylline serum concentrations 3 days after dosage adjustment. Observe the infusion site (IV). Monitor heart and respiratory rate, serum K levels; arterial or capillary blood gases (if applicable); CNS effects (e.g. insomnia, irritability).
Adverse Reactions
Significant: May exacerbate seizure, arrhythmias, and peptic ulcer; urinary retention (particularly in elderly males). Cardiac disorders: Palpitations, tachycardia. Ear and labyrinth disorders: Vertigo. Eye disorders: Visual disturbances. Gastrointestinal disorders: Nausea, vomiting, diarrhoea, abdominal pain, gastrointestinal haemorrhage, GERD; gastric irritation (oral). General disorders and administration site conditions: Hyperthermia and extreme thirst (at higher dose). Immune system disorders: Hypersensitivity. Metabolism and nutrition disorders: Hypokalaemia, hyponatraemia, hypophosphataemia. Nervous system disorders: Headache, confusional state, dizziness, tremor. Psychiatric disorders: Anxiety, insomnia, restlessness; delirium and maniacal behaviour (high dose). Respiratory, thoracic and mediastinal disorders: Hyperventilation. Skin and subcutaneous tissue disorders: Rash, pruritus, urticaria, exfoliative dermatitis, rash maculo-papular, erythema. Vascular disorders: Hypotension.
Potentially Fatal: Severe theophylline toxicity.
Drug Interactions
May increase plasma theophylline concentration with fluvoxamine, cimetidine, fluconazole, macrolides (e.g. clarithromycin, erythromycin), quinolones (e.g. norfloxacin, ciprofloxacin), propranolol, isoniazid, allopurinol (at high doses e.g. 600 mg daily), estrogen-containing oral contraceptives, disulfiram, Ca channel blockers (e.g. verapamil), mexiletine, propafenone, interferon-alfa, influenza vaccine, tacrine, thiabendazole, methotrexate, thyroid hormones, or zafirlukast. May decrease plasma theophylline concentration with rifampicin, ritonavir, antiepileptic drugs (e.g. carbamazepine, phenytoin, phenobarbital, primidone), sulfinpyrazone, and aminoglutethimide. Increased risk of convulsions with ketamine. May diminish the effects of benzodiazepines and lithium. Increased risk of arrhythmias with halothane. May antagonise the neuromuscular blocking effects of pancuronium. Diminished bronchodilatory effects with β- blockers. May inhibit the effects of adenosine receptor agonists (e.g. adenosine, dipyridamole, regadenoson). May enhance the sensitivity and toxic potential of cardiac glycosides. Increased CNS stimulation with doxapram. Increased risk of hypokalaemia with β2-adrenergic agonists, corticosteroids, and diuretics.
ATC Classification
R03DA05 - aminophylline ; Belongs to the class of xanthines. Used in the systemic treatment of obstructive airway diseases.
Disclaimer: This information is independently developed by CIMS based on aminophylline from various references and is provided for your reference only. Therapeutic uses, prescribing information and product availability may vary between countries. Please refer to CIMS Product Monographs for specific and locally approved prescribing information. Although great effort has been made to ensure content accuracy, CIMS shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2021 CIMS. All rights reserved. Powered by CIMSAsia.com
Register or sign in to continue
Asia's one-stop resource for medical news, clinical reference and education
Sign up for free
Already a member? Sign in