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Theophylline is excreted unchanged in the urine (up to 10%). Clearance of the drug is increased in children (age 1 to 12), teenagers (12 to 16), adult smokers, elderly smokers, as well as in cystic fibrosis, and hyperthyroidism. Clearance of the drug is decreased in these conditions: elderly, acute congestive heart failure, cirrhosis ...
[16] [17] [18] Combinations of theophylline, ephedrine, and a barbiturate were later phased out in favor of combinations of theophylline and ephedrine alone (e.g., brand name Franol). [ 2 ] [ 1 ] Fixed-dose combinations of theophylline and ephedrine were abandoned after the 1970s as they did not allow for dose titration in asthma therapy owing ...
And Tedral exerts its therapeutic effects by decreasing airway responsiveness to allergens and relaxing the smooth muscle of the airways, thereby, making breathing easier. Tedral is an oral bronchodilator, which contains three active ingredients, including (1) theophylline, (2) ephedrine, and (3) phenobarbital. [13]
Theophylline is a non-selective adenosine receptor antagonist. It is also an anti-asthmatic agent and a demethylated metabolite of caffeine. Small open-label trials suggest that theophylline has anti-parkinsonian benefit but a double-blind, placebo-controlled trial did not clearly establish relief from symptoms. [3]
Phosphodiesterase-5. A phosphodiesterase inhibitor is a drug that blocks one or more of the five subtypes of the enzyme phosphodiesterase (PDE), thereby preventing the inactivation of the intracellular second messengers, cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) by the respective PDE subtype(s).
I was struggling to do everyday tasks like read, use a phone, or make food, and, at first, just looking out the window as the passenger in a car was exhausting since my eyes had to scan more to ...
Methylxanthines, including theophylline, aminophylline and dyphylline, are a class of drugs that can achieve bronchodilation and reduce bronchospasm for symptomatic control of asthma. [ 7 ] Methylxanthines act as a competitive inhibitor of phosphodiesterase , inhibiting phosphodiesterase degradation action of cyclic 3′,5′-adenosine ...
Choline theophyllinate (), also known as oxtriphylline, is a cough medicine derived from xanthine that acts as a bronchodilator to open up airways in the lung. Chemically, it is a salt of choline and theophylline.