Pharmacology All of the following statements are true about theophylline except – A Increase in dose is required in cardiopulmonary disease B Increases cAMP C Increase in dose is required in smokers D Inhibits phosphodiesterase 💡 Explanation All of the following statements are true about theophylline except - ✓ Correct Answer: A. Increase in dose is required in cardiopulmonary disease