The trial was conducted from Mar 15 to Aug 31, 2021. Participants were mailed saline sinus-rinse kits and identical-appearing capsules containing either 400 milligrams (mg) of theophylline or a ...
Theophylline has bronchodilatory and anti-inflammatory effects, and is also inexpensive and widely available. However, at clinically effective blood concentrations of around 10–20 mg/L, theophylline ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback