Pharmacology Mechanism of action of theophylline in bronchial asthma is A Phosphodiestesterase 4 inhibition B inhibit the release of mediators C Anticholinergic action D Inhibition of mucociliary clearance 💡 Explanation Mechanism of action of theophylline in bronchial asthma is ✓ Correct Answer: A. Phosphodiestesterase 4 inhibition