Pharmacology The H3 receptor agonist exhibits all of the following actions EXCEPT A Inhibition of H1receptor induced wakefulness B Increase in H1 mediated gastrin secretion C Inhibition of H1 mediated bronchoconstriction D Negative chronotropic effect on atria 💡 Explanation The H3 receptor agonist exhibits all of the following actions EXCEPT ✓ Correct Answer: B. Increase in H1 mediated gastrin secretion