Comparative Pharmacology
Head-to-head clinical analysis: BRONKOMETER versus THEOLAIR SR.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BRONKOMETER versus THEOLAIR SR.
BRONKOMETER vs THEOLAIR-SR
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Beta-2 adrenergic receptor agonist; relaxes bronchial smooth muscle by increasing cyclic AMP.
Theophylline is a methylxanthine that relaxes bronchial smooth muscle by inhibiting phosphodiesterase, increasing cAMP, and antagonizing adenosine receptors.
Isoetharine mesylate 0.5% solution: 2-4 inhalations every 4 hours as needed via hand-held nebulizer or IPPB.
Oral: 300-600 mg every 12 hours; sustained-release formulation; adjust based on serum theophylline concentrations (target 5-15 mcg/mL).
None Documented
None Documented
Terminal elimination half-life: 2-3 hours; clinically, bronchodilation persists but dosing interval is 3-4 hours due to rapid onset and offset.
Adults: 8 hours (range 5-12). Children: 3.5 hours (range 1-8). Smokers: 4-5 hours. Congestive heart failure/hepatic cirrhosis: >24 hours.
Renal: 10-15% unchanged; 70-80% as sulfate conjugates; biliary/fecal: <5%.
Renal (10% unchanged) and hepatic metabolism (90%). Metabolites excreted in urine.
Category C
Category C
Bronchodilator
Bronchodilator