Pharmacology Mechanism of action of theophylline in Bronchial asthma include all of the following Except – A Phosphodiesterase inhibition B Adenosine receptor antagonism C Increased histone deacetylation D Beta-2 receptor stimulation 💡 Explanation Mechanism of action of theophylline in Bronchial asthma include all of the following Except - ✓ Correct Answer: D. Beta-2 receptor stimulation