All of the following statements are true about theophylline except -
Increase in dose is required in cardiopulmonary disease
Increases cAMP
Increase in dose is required in smokers
Inhibits phosphodiesterase
Ans. is 'a' i.e., Increase in dose is required in Cardiopulmonary disease o Pneumonia and CHF (Cardiopulmonary disease) require dose reduction (not increased dose). o Other options are correct.