Comparative Pharmacology
Head-to-head clinical analysis: AMINOPHYLLINE DYE FREE versus PHYLLOCONTIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AMINOPHYLLINE DYE FREE versus PHYLLOCONTIN.
AMINOPHYLLINE DYE FREE vs PHYLLOCONTIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Aminophylline is a salt form of theophylline that exerts bronchodilation by inhibiting phosphodiesterase, increasing intracellular cAMP. It also blocks adenosine receptors, stimulates central respiratory drive, and reduces diaphragmatic fatigue.
Sustained-release theophylline; nonselective phosphodiesterase (PDE) inhibitor, adenosine receptor antagonist, and histone deacetylase activator. Bronchodilation via relaxation of bronchial smooth muscle; also reduces airway hyperresponsiveness and inflammation.
Loading dose: 6 mg/kg IV over 30 minutes (use ideal body weight). Maintenance: 0.5-0.7 mg/kg/hour IV infusion for non-smoking adults; 0.8-1.0 mg/kg/hour for smokers. Oral: 200-400 mg every 6-8 hours (extended-release formulations available).
For chronic obstructive pulmonary disease and asthma: initial dose 225 mg orally twice daily; may increase to 450 mg twice daily. Based on theophylline, target serum concentration 5-15 mcg/mL.
None Documented
None Documented
Terminal elimination half-life is approximately 7-9 hours in healthy adults. In smokers, half-life decreases to 4-5 hours. In patients with hepatic cirrhosis, heart failure, or COPD, half-life may prolong to 20-30 hours.
Terminal elimination half-life: 3-8 hours in non-smoking adults; reduced to 1.5-5 hours in smokers; prolonged to 10-30 hours in heart failure or hepatic cirrhosis.
Primarily hepatic metabolism (approximately 90%) to 1,3-dimethyluric acid and other metabolites; renal excretion of unchanged drug accounts for about 10-13% of the dose. Less than 1% is excreted via bile or feces.
Renal: approximately 10% unchanged; hepatic metabolism accounts for ~90% of clearance; metabolites eliminated renally.
Category C
Category C
Xanthine Bronchodilator
Xanthine Bronchodilator