Pharmacology Mechanism of action of Theophylline in bronchial asthma A Phosphodiestesrase 4 inhibition B Beta 2 agonism C Antichoinergic action D Inhibition of mucociliary clearance 💡 Explanation Mechanism of action of Theophylline in bronchial asthma ✓ Correct Answer: A. Phosphodiestesrase 4 inhibition